From abd792acd5785ae85e101e34edc6684762a76cd7 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Sat, 28 Feb 2026 03:13:59 -0500
Subject: [PATCH 01/14] add device enumeration

bindings, base functions, and Remote methods implemented

initial manual tests for potato pass
---
 lib/Voicemeeter.psm1 | 16 +++++++++++++
 lib/base.ps1         | 55 ++++++++++++++++++++++++++++++++++++++++++++
 lib/binding.ps1      |  9 ++++++++
 3 files changed, 80 insertions(+)

diff --git a/lib/Voicemeeter.psm1 b/lib/Voicemeeter.psm1
index d68e388..d132c4e 100644
--- a/lib/Voicemeeter.psm1
+++ b/lib/Voicemeeter.psm1
@@ -75,6 +75,22 @@ class Remote {
     [void] PDirty() { P_Dirty }
 
     [void] MDirty() { M_Dirty }
+
+    [int] GetOutputCount() {
+        return Device_Count -IS_OUT $true
+    }
+
+    [int] GetInputCount() {
+        return Device_Count
+    }
+
+    [PSObject] GetOutputDevice([int]$index) {
+        return Device_Desc -INDEX $index -IS_OUT $true
+    }
+
+    [PSObject] GetInputDevice([int]$index) {
+        return Device_Desc -INDEX $index
+    }
 }
 
 class RemoteBasic : Remote {
diff --git a/lib/base.ps1 b/lib/base.ps1
index 331c8d5..84a4da5 100644
--- a/lib/base.ps1
+++ b/lib/base.ps1
@@ -225,4 +225,59 @@ function Get_Level {
         throw [CAPIError]::new($retval, 'VBVMR_GetLevel') 
     }
     [float]$ptr
+}
+
+function Device_Count {
+    param(
+        [bool]$IS_OUT = $false
+    )
+    if ($IS_OUT) {
+        $retval = [int][Voicemeeter.Remote]::VBVMR_Output_GetDeviceNumber()
+        if ($retval -lt 0) { 
+            throw [CAPIError]::new($retval, 'VBVMR_Output_GetDeviceNumber') 
+        }
+    }
+    else {
+        $retval = [int][Voicemeeter.Remote]::VBVMR_Input_GetDeviceNumber()
+        if ($retval -lt 0) { 
+            throw [CAPIError]::new($retval, 'VBVMR_Input_GetDeviceNumber') 
+        }
+    }
+    $retval
+}
+
+function Device_Desc {
+    param(
+        [int]$INDEX, [bool]$IS_OUT = $false
+    )
+    $driver = 0
+    $name = [System.Byte[]]::new(512)
+    $hardwareid = [System.Byte[]]::new(512)
+
+    if ($IS_OUT) {
+        $retval = [int][Voicemeeter.Remote]::VBVMR_Output_GetDeviceDescA($INDEX, [ref]$driver, $name, $hardwareid)
+        if ($retval -notin @(0)) { 
+            throw [CAPIError]::new($retval, 'VBVMR_Output_GetDeviceDescA') 
+        }
+    }
+    else {
+        $retval = [int][Voicemeeter.Remote]::VBVMR_Input_GetDeviceDescA($INDEX, [ref]$driver, $name, $hardwareid)
+        if ($retval -notin @(0)) { 
+            throw [CAPIError]::new($retval, 'VBVMR_Input_GetDeviceDescA') 
+        }
+    }
+
+    $drivers = @{
+        1 = 'MME'
+        3 = 'WDM'
+        4 = 'KS'
+        5 = 'ASIO'
+    }
+
+    [PSCustomObject]@{
+        Driver     = $drivers[$driver]
+        Name       = [System.Text.Encoding]::ASCII.GetString($name).Trim([char]0)
+        HardwareID = [System.Text.Encoding]::ASCII.GetString($hardwareid).Trim([char]0)
+        IsOutput   = $IS_OUT
+    }
 }
\ No newline at end of file
diff --git a/lib/binding.ps1 b/lib/binding.ps1
index 201ff26..a5ff579 100644
--- a/lib/binding.ps1
+++ b/lib/binding.ps1
@@ -43,6 +43,15 @@ function Setup_DLL {
 
     [DllImport(@"$dll")]
     public static extern int VBVMR_GetLevel(Int64 mode, Int64 index, ref float ptr);
+
+    [DllImport(@"$dll")]
+    public static extern int VBVMR_Output_GetDeviceNumber();
+    [DllImport(@"$dll")]
+    public static extern int VBVMR_Input_GetDeviceNumber();
+    [DllImport(@"$dll")]
+    public static extern int VBVMR_Output_GetDeviceDescA(Int64 index, ref int type, byte[] name, byte[] hardwareid);
+    [DllImport(@"$dll")]
+    public static extern int VBVMR_Input_GetDeviceDescA(Int64 index, ref int type, byte[] name, byte[] hardwareid);
 "@
 
     Add-Type -MemberDefinition $Signature -Name Remote -Namespace Voicemeeter -PassThru | Out-Null

From 2f2d4af8485edcccfd114aedd2ac7c6f19527a32 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Sat, 28 Feb 2026 20:35:12 -0500
Subject: [PATCH 02/14] IODevice.driver

initial pester tests pass for all kinds
---
 lib/Voicemeeter.psm1   |  4 ++++
 lib/bus.ps1            |  2 +-
 lib/io.ps1             | 50 +++++++++++++++++++++++++++++++++++++++++-
 lib/strip.ps1          |  2 +-
 tests/higher.Tests.ps1 | 44 ++++++++++++-------------------------
 5 files changed, 69 insertions(+), 33 deletions(-)

diff --git a/lib/Voicemeeter.psm1 b/lib/Voicemeeter.psm1
index d132c4e..4d5519f 100644
--- a/lib/Voicemeeter.psm1
+++ b/lib/Voicemeeter.psm1
@@ -20,11 +20,15 @@ class Remote {
     [String]$vmpath
     [Hashtable]$kind
     [Object]$profiles
+    [String]$userpath
+    [String]$workingconfig
 
     Remote ([String]$kindId) {
         $this.vmpath = Setup_DLL
         $this.kind = GetKind($kindId)
         $this.profiles = Get_Profiles($this.kind.name)
+        $this.userpath = Join-Path ([Environment]::GetFolderPath('MyDocuments')) 'Voicemeeter'
+        $this.workingconfig = Join-Path $this.userpath ('vm' + $this.kind.name + '_working.xml')
     }
 
     [string] ToString() {
diff --git a/lib/bus.ps1 b/lib/bus.ps1
index 38e32e4..787e950 100644
--- a/lib/bus.ps1
+++ b/lib/bus.ps1
@@ -97,7 +97,7 @@ class VirtualBus : Bus {
 }
 
 class BusDevice : IODevice {
-    BusDevice ([int]$index, [Object]$remote) : base ($index, $remote) {
+    BusDevice ([int]$index, [Object]$remote) : base ($index, $remote, 'Output') {
         if ($this.index -eq 0) {
             AddStringMembers -PARAMS @('asio') -WriteOnly
         }
diff --git a/lib/io.ps1 b/lib/io.ps1
index eebe18f..f767900 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -100,9 +100,57 @@ class EqCell : IRemote {
 }
 
 class IODevice : IRemote {
-    IODevice ([int]$index, [Object]$remote) : base ($index, $remote) {
+    [string]$kindOfDevice
+    
+    IODevice ([int]$index, [Object]$remote, [string]$kindOfDevice) : base ($index, $remote) {
+        $this.kindOfDevice = $kindOfDevice
+        
         AddStringMembers -WriteOnly -PARAMS @('wdm', 'ks', 'mme')
         AddStringMembers -ReadOnly -PARAMS @('name')
         AddIntMembers -ReadOnly -PARAMS @('sr')
     }
+
+    hidden $_driver = $($this | Add-Member ScriptProperty 'driver' `
+        {
+            $path = $this.remote.workingconfig
+            $oldTime = if (Test-Path $path) { (Get-Item $path).LastWriteTime } else { [DateTime]::MinValue }
+
+            $this.remote.Setter('Command.Save', $path)
+
+            $timeout = New-TimeSpan -Seconds 2
+            $sw = [Diagnostics.Stopwatch]::StartNew()
+            $line = $null
+            do {
+                if (Test-Path $path) {
+                    $newTime = (Get-Item $path).LastWriteTime
+                    if ($newTime -gt $oldTime) {
+                        try {
+                            $line = Get-Content $path | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'"
+                            if ($line) { break }
+                        }
+                        catch {}
+                    }
+                }
+                Start-Sleep -Milliseconds 20
+            } while ($sw.elapsed -lt $timeout)
+            
+            if (-not $line) { return 'unknown' }
+
+            $type = $null
+            if ($line.ToString() -match "type='(?<type>\d+)'") {
+                $type = $matches['type']
+            }
+
+            switch ($type) {
+                '1' { return 'mme' }
+                '4' { return 'wdm' }
+                '8' { return 'ks' }
+                '256' { return 'asio' }
+                default { return 'none' }
+            }
+        } `
+        {
+            Write-Warning ("ERROR: $($this.identifier()).driver is read only")
+        }
+    )
 }
\ No newline at end of file
diff --git a/lib/strip.ps1 b/lib/strip.ps1
index 1ac1528..c7d920e 100644
--- a/lib/strip.ps1
+++ b/lib/strip.ps1
@@ -155,7 +155,7 @@ class StripEq : IOEq {
 }
 
 class StripDevice : IODevice {
-    StripDevice ([int]$index, [Object]$remote) : base ($index, $remote) {
+    StripDevice ([int]$index, [Object]$remote) : base ($index, $remote, 'Input') {
     }
 
     [string] identifier () {
diff --git a/tests/higher.Tests.ps1 b/tests/higher.Tests.ps1
index 0d06d77..dc128d9 100644
--- a/tests/higher.Tests.ps1
+++ b/tests/higher.Tests.ps1
@@ -983,24 +983,16 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
             @{ Index = $phys_out }
         ) {
             Context 'Device' -ForEach @(
-                @{ Value = 'testOutput' }, @{ Value = '' }
+                @{ Driver = 'mme'; Value = 'testMme'; Expected = 'mme' }
+                @{ Driver = 'wdm'; Value = 'testWdm'; Expected = 'wdm' }
+                @{ Driver = 'ks'; Value = 'testKs'; Expected = 'ks' }
+                @{ Driver = 'mme'; Value = ''; Expected = 'none' }
             ) {
-                It "Should set Bus[$index].Device.wdm" {
-                    $vmr.bus[$index].device.wdm = $value
-                    Start-Sleep -Milliseconds 800
-                    $vmr.bus[$index].device.name | Should -Be $value
-                }
-
-                It "Should set Bus[$index].Device.ks" {
-                    $vmr.bus[$index].device.ks = $value
-                    Start-Sleep -Milliseconds 800
-                    $vmr.bus[$index].device.name | Should -Be $value
-                }
-            
-                It "Should set Bus[$index].Device.mme" {
-                    $vmr.bus[$index].device.mme = $value
+                It "Should set Bus[$index].Device.$($driver)" {
+                    $vmr.bus[$index].device.$($driver) = $value
                     Start-Sleep -Milliseconds 800
                     $vmr.bus[$index].device.name | Should -Be $value
+                    $vmr.bus[$index].device.driver | Should -Be $expected
                 }
             }
         }
@@ -1009,24 +1001,16 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
             @{ Index = $virt_out }
         ) {
             Context 'Device' -Skip:$ifNotBasic -ForEach @(
-                @{ Value = 'testOutput' }, @{ Value = '' }
+                @{ Driver = 'mme'; Value = 'testMme'; Expected = 'mme' }
+                @{ Driver = 'wdm'; Value = 'testWdm'; Expected = 'wdm' }
+                @{ Driver = 'ks'; Value = 'testKs'; Expected = 'ks' }
+                @{ Driver = 'mme'; Value = ''; Expected = 'none' }
             ) {
-                It "Should set Bus[$index].Device.wdm" {
-                    $vmr.bus[$index].device.wdm = $value
-                    Start-Sleep -Milliseconds 800
-                    $vmr.bus[$index].device.name | Should -Be $value
-                }
-
-                It "Should set Bus[$index].Device.ks" {
-                    $vmr.bus[$index].device.ks = $value
-                    Start-Sleep -Milliseconds 800
-                    $vmr.bus[$index].device.name | Should -Be $value
-                }
-
-                It "Should set Bus[$index].Device.mme" {
-                    $vmr.bus[$index].device.mme = $value
+                It "Should set Bus[$index].Device.$($driver)" {
+                    $vmr.bus[$index].device.$($driver) = $value
                     Start-Sleep -Milliseconds 800
                     $vmr.bus[$index].device.name | Should -Be $value
+                    $vmr.bus[$index].device.driver | Should -Be $expected
                 }
             }
         }

From defb2b68c02b2e0e3cc5a5560daddc79ff60da2e Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Mon, 2 Mar 2026 05:24:30 -0500
Subject: [PATCH 03/14] driver type capitalization

---
 lib/base.ps1 | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/base.ps1 b/lib/base.ps1
index 84a4da5..0f1c1a5 100644
--- a/lib/base.ps1
+++ b/lib/base.ps1
@@ -268,10 +268,10 @@ function Device_Desc {
     }
 
     $drivers = @{
-        1 = 'MME'
-        3 = 'WDM'
-        4 = 'KS'
-        5 = 'ASIO'
+        1 = 'mme'
+        3 = 'wdm'
+        4 = 'ks'
+        5 = 'asio'
     }
 
     [PSCustomObject]@{

From 1f5b52b439b444e7e8bb3c507579796395aa26cf Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Mon, 2 Mar 2026 06:55:55 -0500
Subject: [PATCH 04/14] improve speed of Select-String

device config is at the very top of the xml, so this should be much faster
---
 lib/io.ps1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/io.ps1 b/lib/io.ps1
index f767900..5592c94 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -125,7 +125,7 @@ class IODevice : IRemote {
                     $newTime = (Get-Item $path).LastWriteTime
                     if ($newTime -gt $oldTime) {
                         try {
-                            $line = Get-Content $path | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'"
+                            $line = Get-Content $path | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
                             if ($line) { break }
                         }
                         catch {}

From 8d267078ff4e96461e69b33340af0bb44d75fc55 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Mon, 2 Mar 2026 11:31:30 -0500
Subject: [PATCH 05/14] drivers

switch -> hashtable
---
 lib/io.ps1 | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/lib/io.ps1 b/lib/io.ps1
index 5592c94..52c261c 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -101,6 +101,7 @@ class EqCell : IRemote {
 
 class IODevice : IRemote {
     [string]$kindOfDevice
+    [Hashtable]$drivers
     
     IODevice ([int]$index, [Object]$remote, [string]$kindOfDevice) : base ($index, $remote) {
         $this.kindOfDevice = $kindOfDevice
@@ -108,6 +109,13 @@ class IODevice : IRemote {
         AddStringMembers -WriteOnly -PARAMS @('wdm', 'ks', 'mme')
         AddStringMembers -ReadOnly -PARAMS @('name')
         AddIntMembers -ReadOnly -PARAMS @('sr')
+
+        $this.drivers = @{
+            '1'   = 'mme'
+            '4'   = 'wdm'
+            '8'   = 'ks'
+            '256' = 'asio'
+        }
     }
 
     hidden $_driver = $($this | Add-Member ScriptProperty 'driver' `
@@ -141,13 +149,9 @@ class IODevice : IRemote {
                 $type = $matches['type']
             }
 
-            switch ($type) {
-                '1' { return 'mme' }
-                '4' { return 'wdm' }
-                '8' { return 'ks' }
-                '256' { return 'asio' }
-                default { return 'none' }
-            }
+            if ($null -eq $type) { return 'none' }
+            if ($type -notin $this.drivers.Keys) { return 'unknown' }
+            return $this.drivers[$type]
         } `
         {
             Write-Warning ("ERROR: $($this.identifier()).driver is read only")

From 6b2031de9942fcfc9da02b69be1bd07c21e19cdf Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Tue, 3 Mar 2026 19:54:39 -0500
Subject: [PATCH 06/14] clean up IODevice.driver

'none' -> ''
early return if name is empty
---
 lib/io.ps1 | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/lib/io.ps1 b/lib/io.ps1
index 52c261c..3f75ab8 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -120,6 +120,8 @@ class IODevice : IRemote {
 
     hidden $_driver = $($this | Add-Member ScriptProperty 'driver' `
         {
+            if ([string]::IsNullOrEmpty($this.name)) { return '' }
+
             $path = $this.remote.workingconfig
             $oldTime = if (Test-Path $path) { (Get-Item $path).LastWriteTime } else { [DateTime]::MinValue }
 
@@ -141,15 +143,12 @@ class IODevice : IRemote {
                 }
                 Start-Sleep -Milliseconds 20
             } while ($sw.elapsed -lt $timeout)
-            
-            if (-not $line) { return 'unknown' }
 
             $type = $null
-            if ($line.ToString() -match "type='(?<type>\d+)'") {
+            if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
                 $type = $matches['type']
             }
 
-            if ($null -eq $type) { return 'none' }
             if ($type -notin $this.drivers.Keys) { return 'unknown' }
             return $this.drivers[$type]
         } `

From 4ea371af2f44a4a61efb639ef697288cc26ee7f1 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Wed, 4 Mar 2026 04:08:08 -0500
Subject: [PATCH 07/14] more IODevice.driver tweaks

use temp file instead of persistent

manual and pester tests pass
---
 lib/Voicemeeter.psm1 |  4 ----
 lib/io.ps1           | 23 ++++++++++++-----------
 2 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/lib/Voicemeeter.psm1 b/lib/Voicemeeter.psm1
index 4d5519f..d132c4e 100644
--- a/lib/Voicemeeter.psm1
+++ b/lib/Voicemeeter.psm1
@@ -20,15 +20,11 @@ class Remote {
     [String]$vmpath
     [Hashtable]$kind
     [Object]$profiles
-    [String]$userpath
-    [String]$workingconfig
 
     Remote ([String]$kindId) {
         $this.vmpath = Setup_DLL
         $this.kind = GetKind($kindId)
         $this.profiles = Get_Profiles($this.kind.name)
-        $this.userpath = Join-Path ([Environment]::GetFolderPath('MyDocuments')) 'Voicemeeter'
-        $this.workingconfig = Join-Path $this.userpath ('vm' + $this.kind.name + '_working.xml')
     }
 
     [string] ToString() {
diff --git a/lib/io.ps1 b/lib/io.ps1
index 3f75ab8..49d6f27 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -122,31 +122,32 @@ class IODevice : IRemote {
         {
             if ([string]::IsNullOrEmpty($this.name)) { return '' }
 
-            $path = $this.remote.workingconfig
-            $oldTime = if (Test-Path $path) { (Get-Item $path).LastWriteTime } else { [DateTime]::MinValue }
-
-            $this.remote.Setter('Command.Save', $path)
+            $type = $null
+            try {
+                $tmp = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), "vmrtmp-$(New-Guid).xml")
+                $this.remote.Setter('Command.Save', $tmp)
 
             $timeout = New-TimeSpan -Seconds 2
             $sw = [Diagnostics.Stopwatch]::StartNew()
             $line = $null
             do {
-                if (Test-Path $path) {
-                    $newTime = (Get-Item $path).LastWriteTime
-                    if ($newTime -gt $oldTime) {
+                    if (Test-Path $tmp) {
                         try {
-                            $line = Get-Content $path | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
+                            $line = Get-Content $tmp | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
                             if ($line) { break }
                         }
                         catch {}
-                    }
                 }
                 Start-Sleep -Milliseconds 20
             } while ($sw.elapsed -lt $timeout)
-
-            $type = $null
             if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
                 $type = $matches['type']
+                }
+            }
+            finally {
+                if (Test-Path $tmp) {
+                    Remove-Item $tmp -Force
+                }
             }
 
             if ($type -notin $this.drivers.Keys) { return 'unknown' }

From 7d9615d760eaf242d22f86b88d7f68aeb7eae0fe Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Wed, 4 Mar 2026 04:23:10 -0500
Subject: [PATCH 08/14] Get(), Set($device), Clear()

methods added to IODevice

manual and pester tests pass for all kinds
---
 lib/bus.ps1            |   8 +++
 lib/io.ps1             |  69 +++++++++++++++++++++----
 lib/strip.ps1          |   8 +++
 tests/higher.Tests.ps1 | 113 ++++++++++++++++++++++++++++++++++++-----
 4 files changed, 174 insertions(+), 24 deletions(-)

diff --git a/lib/bus.ps1 b/lib/bus.ps1
index 787e950..9584089 100644
--- a/lib/bus.ps1
+++ b/lib/bus.ps1
@@ -106,6 +106,14 @@ class BusDevice : IODevice {
     [string] identifier () {
         return 'Bus[' + $this.index + '].Device'
     }
+
+    [int] EnumCount () {
+        return $this.remote.GetOutputCount()
+    }
+
+    [PSObject] EnumDevice ([int]$eIndex) {
+        return $this.remote.GetOutputDevice($eIndex)
+    }
 }
 
 function Make_Buses ([Object]$remote) {
diff --git a/lib/io.ps1 b/lib/io.ps1
index 49d6f27..912f73e 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -118,30 +118,79 @@ class IODevice : IRemote {
         }
     }
 
+    [int] EnumCount () {
+        throw [System.NotImplementedException]::new("$($this.GetType().Name) must override EnumCount()")
+    }
+
+    [PSObject] EnumDevice ([int]$eIndex) {
+        throw [System.NotImplementedException]::new("$($this.GetType().Name) must override EnumDevice()")
+    }
+
+    [PSObject] Get () {
+        $device = [PSCustomObject]@{
+            Driver     = $this.driver
+            Name       = $this.name
+            HardwareId = ''
+            IsOutput   = $this.kindOfDevice -eq 'Output'
+        }
+        if (-not [string]::IsNullOrEmpty($device.Name)) {
+            for ($i = 0; $i -lt $this.EnumCount(); $i++) {
+                $eDevice = $this.EnumDevice($i)
+                if ($eDevice.Name -eq $device.Name -and $eDevice.Driver -eq $device.Driver) {
+                    $device = $eDevice
+                    break
+                }
+            }
+        }
+        return $device
+    }
+
+    [void] Set ([PSObject]$device) {
+        $v = $device.IsOutput -eq ($this.kindOfDevice -eq 'Output')
+        $d = $device.Driver
+        $n = $device.Name
+
+        if ($v -and $d -is [string] -and $n -is [string]) {
+            if ($d -eq '' -and $n -eq '') {
+                $this.Clear()
+                return
+            }
+            if ($d -in $this.drivers.Values) {
+                $this.Setter($d, $n)
+                return
+            }
+        }
+        Write-Warning "Invalid device object provided to Set method."
+    }
+
+    [void] Clear () {
+        $this.Setter('mme', '')
+    }
+
     hidden $_driver = $($this | Add-Member ScriptProperty 'driver' `
         {
             if ([string]::IsNullOrEmpty($this.name)) { return '' }
-
+            
             $type = $null
             try {
                 $tmp = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), "vmrtmp-$(New-Guid).xml")
                 $this.remote.Setter('Command.Save', $tmp)
 
-            $timeout = New-TimeSpan -Seconds 2
-            $sw = [Diagnostics.Stopwatch]::StartNew()
-            $line = $null
-            do {
+                $timeout = New-TimeSpan -Seconds 2
+                $sw = [Diagnostics.Stopwatch]::StartNew()
+                $line = $null
+                do {
                     if (Test-Path $tmp) {
                         try {
                             $line = Get-Content $tmp | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
                             if ($line) { break }
                         }
                         catch {}
-                }
-                Start-Sleep -Milliseconds 20
-            } while ($sw.elapsed -lt $timeout)
-            if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
-                $type = $matches['type']
+                    }
+                    Start-Sleep -Milliseconds 20
+                } while ($sw.elapsed -lt $timeout)
+                if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
+                    $type = $matches['type']
                 }
             }
             finally {
diff --git a/lib/strip.ps1 b/lib/strip.ps1
index c7d920e..bbc65b3 100644
--- a/lib/strip.ps1
+++ b/lib/strip.ps1
@@ -161,6 +161,14 @@ class StripDevice : IODevice {
     [string] identifier () {
         return 'Strip[' + $this.index + '].Device'
     }
+
+    [int] EnumCount () {
+        return $this.remote.GetInputCount()
+    }
+
+    [PSObject] EnumDevice ([int]$eIndex) {
+        return $this.remote.GetInputDevice($eIndex)
+    }
 }
 
 class VirtualStrip : Strip {
diff --git a/tests/higher.Tests.ps1 b/tests/higher.Tests.ps1
index dc128d9..15d0b0c 100644
--- a/tests/higher.Tests.ps1
+++ b/tests/higher.Tests.ps1
@@ -850,24 +850,47 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
             @{ Index = $phys_in }
         ) {
             Context 'Device' -ForEach @(
-                @{ Value = 'testInput' }, @{ Value = '' }
+                @{ Driver = 'mme'; Value = 'testMme'; Expected = 'mme' }
+                @{ Driver = 'wdm'; Value = 'testWdm'; Expected = 'wdm' }
+                @{ Driver = 'ks'; Value = 'testKs'; Expected = 'ks' }
+                @{ Driver = 'mme'; Value = ''; Expected = '' }
             ) {
-                It "Should set Strip[$index].Device.wdm" {
-                    $vmr.strip[$index].device.wdm = $value
+                BeforeEach {
+                    $vmr.strip[$index].device.Clear()
+                    Start-Sleep -Milliseconds 800
+                }
+                
+                It "Should set Strip[$index].Device.$($driver)" {
+                    $vmr.strip[$index].device.name | Should -Be ''
+                    $vmr.strip[$index].device.driver | Should -Be ''
+                    
+                    $vmr.strip[$index].device.$($driver) = $value
                     Start-Sleep -Milliseconds 800
                     $vmr.strip[$index].device.name | Should -Be $value
+                    $vmr.strip[$index].device.driver | Should -Be $expected
                 }
 
-                It "Should set Strip[$index].Device.ks" {
-                    $vmr.strip[$index].device.ks = $value
+                It "Should set Strip[$index].Device" -ForEach @(
+                    @{
+                        Clear  = [PSCustomObject]@{ Driver = ''; Name = ''; HardwareId = ''; IsOutput = $false }
+                        Device = [PSCustomObject]@{ Driver = $expected; Name = $value; HardwareId = ''; IsOutput = $false }
+                    }
+                ) {
+                    $initial = $vmr.strip[$index].device.Get()
+                    
+                    $initial.Driver | Should -Be $clear.Driver
+                    $initial.Name | Should -Be $clear.Name
+                    $initial.HardwareId | Should -Be $clear.HardwareId
+                    $initial.IsOutput | Should -Be $clear.IsOutput
+                    
+                    $vmr.strip[$index].device.Set($device)
                     Start-Sleep -Milliseconds 800
-                    $vmr.strip[$index].device.name | Should -Be $value
-                }
-            
-                It "Should set Strip[$index].Device.mme" {
-                    $vmr.strip[$index].device.mme = $value
-                    Start-Sleep -Milliseconds 800
-                    $vmr.strip[$index].device.name | Should -Be $value
+                    $result = $vmr.strip[$index].device.Get()
+                    
+                    $result.Driver | Should -Be $device.Driver
+                    $result.Name | Should -Be $device.Name
+                    $result.HardwareId | Should -Be $device.HardwareId
+                    $result.IsOutput | Should -Be $device.IsOutput
                 }
             }
 
@@ -986,14 +1009,45 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
                 @{ Driver = 'mme'; Value = 'testMme'; Expected = 'mme' }
                 @{ Driver = 'wdm'; Value = 'testWdm'; Expected = 'wdm' }
                 @{ Driver = 'ks'; Value = 'testKs'; Expected = 'ks' }
-                @{ Driver = 'mme'; Value = ''; Expected = 'none' }
+                @{ Driver = 'mme'; Value = ''; Expected = '' }
             ) {
+                BeforeEach {
+                    $vmr.bus[$index].device.Clear()
+                    Start-Sleep -Milliseconds 800
+                }
+                
                 It "Should set Bus[$index].Device.$($driver)" {
+                    $vmr.bus[$index].device.name | Should -Be ''
+                    $vmr.bus[$index].device.driver | Should -Be ''
+                    
                     $vmr.bus[$index].device.$($driver) = $value
                     Start-Sleep -Milliseconds 800
                     $vmr.bus[$index].device.name | Should -Be $value
                     $vmr.bus[$index].device.driver | Should -Be $expected
                 }
+
+                It "Should set Bus[$index].Device" -ForEach @(
+                    @{
+                        Clear  = [PSCustomObject]@{ Driver = ''; Name = ''; HardwareId = ''; IsOutput = $true }
+                        Device = [PSCustomObject]@{ Driver = $expected; Name = $value; HardwareId = ''; IsOutput = $true }
+                    }
+                ) {
+                    $initial = $vmr.bus[$index].device.Get()
+                    
+                    $initial.Driver | Should -Be $clear.Driver
+                    $initial.Name | Should -Be $clear.Name
+                    $initial.HardwareId | Should -Be $clear.HardwareId
+                    $initial.IsOutput | Should -Be $clear.IsOutput
+                    
+                    $vmr.bus[$index].device.Set($device)
+                    Start-Sleep -Milliseconds 800
+                    $result = $vmr.bus[$index].device.Get()
+                    
+                    $result.Driver | Should -Be $device.Driver
+                    $result.Name | Should -Be $device.Name
+                    $result.HardwareId | Should -Be $device.HardwareId
+                    $result.IsOutput | Should -Be $device.IsOutput
+                }
             }
         }
 
@@ -1004,14 +1058,45 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
                 @{ Driver = 'mme'; Value = 'testMme'; Expected = 'mme' }
                 @{ Driver = 'wdm'; Value = 'testWdm'; Expected = 'wdm' }
                 @{ Driver = 'ks'; Value = 'testKs'; Expected = 'ks' }
-                @{ Driver = 'mme'; Value = ''; Expected = 'none' }
+                @{ Driver = 'mme'; Value = ''; Expected = '' }
             ) {
+                BeforeEach {
+                    $vmr.bus[$index].device.Clear()
+                    Start-Sleep -Milliseconds 800
+                }
+                
                 It "Should set Bus[$index].Device.$($driver)" {
+                    $vmr.bus[$index].device.name | Should -Be ''
+                    $vmr.bus[$index].device.driver | Should -Be ''
+                    
                     $vmr.bus[$index].device.$($driver) = $value
                     Start-Sleep -Milliseconds 800
                     $vmr.bus[$index].device.name | Should -Be $value
                     $vmr.bus[$index].device.driver | Should -Be $expected
                 }
+
+                It "Should set Bus[$index].Device" -ForEach @(
+                    @{
+                        Clear  = [PSCustomObject]@{ Driver = ''; Name = ''; HardwareId = ''; IsOutput = $true }
+                        Device = [PSCustomObject]@{ Driver = $expected; Name = $value; HardwareId = ''; IsOutput = $true }
+                    }
+                ) {
+                    $initial = $vmr.bus[$index].device.Get()
+                    
+                    $initial.Driver | Should -Be $clear.Driver
+                    $initial.Name | Should -Be $clear.Name
+                    $initial.HardwareId | Should -Be $clear.HardwareId
+                    $initial.IsOutput | Should -Be $clear.IsOutput
+                    
+                    $vmr.bus[$index].device.Set($device)
+                    Start-Sleep -Milliseconds 800
+                    $result = $vmr.bus[$index].device.Get()
+                    
+                    $result.Driver | Should -Be $device.Driver
+                    $result.Name | Should -Be $device.Name
+                    $result.HardwareId | Should -Be $device.HardwareId
+                    $result.IsOutput | Should -Be $device.IsOutput
+                }
             }
         }
 

From 55ade960f2f3dc135f5e819b675b994ae176c899 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Wed, 4 Mar 2026 20:02:18 -0500
Subject: [PATCH 09/14] update docs

---
 CHANGELOG.md | 14 ++++++++++++++
 README.md    | 29 ++++++++++++++++++++++++++++-
 2 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1be3e0f..c5bdd2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,20 @@ Before any major/minor/patch is released all unit tests will be run to verify th
 
 ## [Unreleased] These changes have not been added to PSGallery yet
 
+### Added
+
+- New Remote methods for device enumeration:
+  - GetInputCount()
+  - GetOutputCount()
+  - GetInputDevice($index)
+  - GetOutputDevice($index)
+
+- New IODevice property `driver` to get the driver type of the current device (e.g. 'WDM', 'MME', etc.)
+
+- New IODevice methods to get, set, or clear the current device for a strip or bus:
+  - Get(): returns a PSObject with properties Driver, Name, HardwareId, and IsOutput
+  - Set($device): accepts a PSObject with properties Driver, Name, and IsOutput
+  - Clear()
 
 ## [4.1.0] - 2025-12-23
 
diff --git a/README.md b/README.md
index 861374f..96ba1c0 100644
--- a/README.md
+++ b/README.md
@@ -368,20 +368,32 @@ $vmr.bus[0].FadeBy(-10, 500)
 The following Strip.device | Bus.device properties are available:
 
 - name: string
+- driver: string
 - sr: int
 - wdm: string
 - ks: string
 - mme: string
 - asio: string
 
+The following Strip.device | Bus.device methods are available:
+
+- Set($device) : PSObject, where device is a PSObject with properties Driver and Name
+- Get() : PSObject, returns a PSObject with properties Driver, Name, HardwareId, and IsOutput
+- Clear() : Clears the currently selected device
+
 for example:
 
 ```powershell
 $vmr.strip[0].device.wdm = "Mic|Line|Instrument 1 (Audient EVO4)"
 $vmr.bus[0].device.name | Write-Host
+
+$device = $vmr.strip[3].device.Get()
+$vmr.strip[1].device.Set($device)    # moves the device selected for strip 4 to strip 2
+
+$vmr.bus[2].device.Clear()
 ```
 
-name, sr are defined as read only.
+name, driver, sr are defined as read only.
 wdm, ks, mme, asio are defined as write only.
 asio only defined for Bus[0].Device
 
@@ -793,6 +805,21 @@ Access to lower level polling functions are provided with these functions:
 - `$vmr.PDirty`: Returns true if a parameter has been updated.
 - `$vmr.MDirty`: Returns true if a macrobutton has been updated.
 
+Access to lower level device enumeration functions are provided with these functions:
+
+- `$vmr.GetInputCount()`: Returns the number of available input devices.
+- `$vmr.GetOutputCount()`: Returns the number of available output devices.
+- `$vmr.GetInputDevice($index)`: Returns a PSObject with properties Driver, Name, HardwareId, and IsOutput for the input device at the given index.
+- `$vmr.GetOutputDevice($index)`: Returns a PSObject with properties Driver, Name, HardwareId, and IsOutput for the output device at the given index.
+
+```powershell
+$count = $vmr.GetInputCount()
+for ($i = 0; $i -lt $count; $i++) {
+    $device = $vmr.GetInputDevice($i)
+    Write-Host "Input Device $i: $($device.Driver) - $($device.Name)"
+}
+```
+
 ### Errors
 
 - `VMRemoteError`: Base custom error class.

From 33dcc98c8fc5c03063329935d25538fb4af94819 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Wed, 4 Mar 2026 20:39:57 -0500
Subject: [PATCH 10/14] small docs corrections

---
 CHANGELOG.md | 2 +-
 README.md    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5bdd2e..d10b5b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,7 +17,7 @@ Before any major/minor/patch is released all unit tests will be run to verify th
   - GetInputDevice($index)
   - GetOutputDevice($index)
 
-- New IODevice property `driver` to get the driver type of the current device (e.g. 'WDM', 'MME', etc.)
+- New IODevice property `driver` to get the driver type of the current device (e.g. 'wdm', 'mme', etc.)
 
 - New IODevice methods to get, set, or clear the current device for a strip or bus:
   - Get(): returns a PSObject with properties Driver, Name, HardwareId, and IsOutput
diff --git a/README.md b/README.md
index 96ba1c0..f4a6a87 100644
--- a/README.md
+++ b/README.md
@@ -377,7 +377,7 @@ The following Strip.device | Bus.device properties are available:
 
 The following Strip.device | Bus.device methods are available:
 
-- Set($device) : PSObject, where device is a PSObject with properties Driver and Name
+- Set($device) : PSObject, where device is a PSObject with properties Driver, Name, and IsOutput
 - Get() : PSObject, returns a PSObject with properties Driver, Name, HardwareId, and IsOutput
 - Clear() : Clears the currently selected device
 

From ed3b7be9044746aa0d8c393e0f9b32925af15f6b Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Wed, 4 Mar 2026 20:43:48 -0500
Subject: [PATCH 11/14] HardwareId

changed capitalization for consistency
---
 lib/base.ps1 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/base.ps1 b/lib/base.ps1
index 0f1c1a5..8f79131 100644
--- a/lib/base.ps1
+++ b/lib/base.ps1
@@ -277,7 +277,7 @@ function Device_Desc {
     [PSCustomObject]@{
         Driver     = $drivers[$driver]
         Name       = [System.Text.Encoding]::ASCII.GetString($name).Trim([char]0)
-        HardwareID = [System.Text.Encoding]::ASCII.GetString($hardwareid).Trim([char]0)
+        HardwareId = [System.Text.Encoding]::ASCII.GetString($hardwareid).Trim([char]0)
         IsOutput   = $IS_OUT
     }
 }
\ No newline at end of file

From d1dfe2de52542025a0bb677d139146b654be273e Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Wed, 4 Mar 2026 21:15:46 -0500
Subject: [PATCH 12/14] revert to user folder

should be faster this way, and it wasn't actually causing the problems i thought it was causing

pester tests pass for all kinds
---
 lib/Voicemeeter.psm1 |  4 ++++
 lib/io.ps1           | 38 ++++++++++++++++++--------------------
 2 files changed, 22 insertions(+), 20 deletions(-)

diff --git a/lib/Voicemeeter.psm1 b/lib/Voicemeeter.psm1
index d132c4e..4d5519f 100644
--- a/lib/Voicemeeter.psm1
+++ b/lib/Voicemeeter.psm1
@@ -20,11 +20,15 @@ class Remote {
     [String]$vmpath
     [Hashtable]$kind
     [Object]$profiles
+    [String]$userpath
+    [String]$workingconfig
 
     Remote ([String]$kindId) {
         $this.vmpath = Setup_DLL
         $this.kind = GetKind($kindId)
         $this.profiles = Get_Profiles($this.kind.name)
+        $this.userpath = Join-Path ([Environment]::GetFolderPath('MyDocuments')) 'Voicemeeter'
+        $this.workingconfig = Join-Path $this.userpath ('vm' + $this.kind.name + '_working.xml')
     }
 
     [string] ToString() {
diff --git a/lib/io.ps1 b/lib/io.ps1
index 912f73e..23dfc4a 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -170,33 +170,31 @@ class IODevice : IRemote {
     hidden $_driver = $($this | Add-Member ScriptProperty 'driver' `
         {
             if ([string]::IsNullOrEmpty($this.name)) { return '' }
-            
-            $type = $null
-            try {
-                $tmp = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), "vmrtmp-$(New-Guid).xml")
-                $this.remote.Setter('Command.Save', $tmp)
 
-                $timeout = New-TimeSpan -Seconds 2
-                $sw = [Diagnostics.Stopwatch]::StartNew()
-                $line = $null
-                do {
-                    if (Test-Path $tmp) {
+            $path = $this.remote.workingconfig
+            $oldTime = if (Test-Path $path) { (Get-Item $path).LastWriteTime } else { [DateTime]::MinValue }
+            $this.remote.Setter('Command.Save', $path)
+
+            $timeout = New-TimeSpan -Seconds 2
+            $sw = [Diagnostics.Stopwatch]::StartNew()
+            $line = $null
+            do {
+                if (Test-Path $path) {
+                    $newTime = (Get-Item $path).LastWriteTime
+                    if ($newTime -gt $oldTime) {
                         try {
-                            $line = Get-Content $tmp | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
+                            $line = Get-Content $path | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
                             if ($line) { break }
                         }
                         catch {}
                     }
-                    Start-Sleep -Milliseconds 20
-                } while ($sw.elapsed -lt $timeout)
-                if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
-                    $type = $matches['type']
-                }
-            }
-            finally {
-                if (Test-Path $tmp) {
-                    Remove-Item $tmp -Force
                 }
+                Start-Sleep -Milliseconds 20
+            } while ($sw.elapsed -lt $timeout)
+            
+            $type = $null
+            if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
+                $type = $matches['type']
             }
 
             if ($type -notin $this.drivers.Keys) { return 'unknown' }

From 91e798caa12146b38dc4ec0a1e907f7e2eb3b97d Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Sat, 14 Mar 2026 18:32:11 -0400
Subject: [PATCH 13/14] Revert "revert to user folder"

This reverts commit d1dfe2de52542025a0bb677d139146b654be273e.
---
 lib/Voicemeeter.psm1 |  4 ----
 lib/io.ps1           | 38 ++++++++++++++++++++------------------
 2 files changed, 20 insertions(+), 22 deletions(-)

diff --git a/lib/Voicemeeter.psm1 b/lib/Voicemeeter.psm1
index 4d5519f..d132c4e 100644
--- a/lib/Voicemeeter.psm1
+++ b/lib/Voicemeeter.psm1
@@ -20,15 +20,11 @@ class Remote {
     [String]$vmpath
     [Hashtable]$kind
     [Object]$profiles
-    [String]$userpath
-    [String]$workingconfig
 
     Remote ([String]$kindId) {
         $this.vmpath = Setup_DLL
         $this.kind = GetKind($kindId)
         $this.profiles = Get_Profiles($this.kind.name)
-        $this.userpath = Join-Path ([Environment]::GetFolderPath('MyDocuments')) 'Voicemeeter'
-        $this.workingconfig = Join-Path $this.userpath ('vm' + $this.kind.name + '_working.xml')
     }
 
     [string] ToString() {
diff --git a/lib/io.ps1 b/lib/io.ps1
index 23dfc4a..912f73e 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -170,31 +170,33 @@ class IODevice : IRemote {
     hidden $_driver = $($this | Add-Member ScriptProperty 'driver' `
         {
             if ([string]::IsNullOrEmpty($this.name)) { return '' }
+            
+            $type = $null
+            try {
+                $tmp = [System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), "vmrtmp-$(New-Guid).xml")
+                $this.remote.Setter('Command.Save', $tmp)
 
-            $path = $this.remote.workingconfig
-            $oldTime = if (Test-Path $path) { (Get-Item $path).LastWriteTime } else { [DateTime]::MinValue }
-            $this.remote.Setter('Command.Save', $path)
-
-            $timeout = New-TimeSpan -Seconds 2
-            $sw = [Diagnostics.Stopwatch]::StartNew()
-            $line = $null
-            do {
-                if (Test-Path $path) {
-                    $newTime = (Get-Item $path).LastWriteTime
-                    if ($newTime -gt $oldTime) {
+                $timeout = New-TimeSpan -Seconds 2
+                $sw = [Diagnostics.Stopwatch]::StartNew()
+                $line = $null
+                do {
+                    if (Test-Path $tmp) {
                         try {
-                            $line = Get-Content $path | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
+                            $line = Get-Content $tmp | Select-String -Pattern "<$($this.kindOfDevice)Dev index='$($this.index + 1)'" -List
                             if ($line) { break }
                         }
                         catch {}
                     }
+                    Start-Sleep -Milliseconds 20
+                } while ($sw.elapsed -lt $timeout)
+                if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
+                    $type = $matches['type']
+                }
+            }
+            finally {
+                if (Test-Path $tmp) {
+                    Remove-Item $tmp -Force
                 }
-                Start-Sleep -Milliseconds 20
-            } while ($sw.elapsed -lt $timeout)
-            
-            $type = $null
-            if ($line -and $line.ToString() -match "type='(?<type>\d+)'") {
-                $type = $matches['type']
             }
 
             if ($type -notin $this.drivers.Keys) { return 'unknown' }

From 68cf0cef37ceefdb718e2e83234a3cf51ed04875 Mon Sep 17 00:00:00 2001
From: pblivingston <71585805+pblivingston@users.noreply.github.com>
Date: Sat, 14 Mar 2026 19:52:46 -0400
Subject: [PATCH 14/14] IODevice.Set readability

manual and pester tests pass
---
 lib/io.ps1 | 35 ++++++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 11 deletions(-)

diff --git a/lib/io.ps1 b/lib/io.ps1
index 912f73e..f0c0475 100644
--- a/lib/io.ps1
+++ b/lib/io.ps1
@@ -146,21 +146,34 @@ class IODevice : IRemote {
     }
 
     [void] Set ([PSObject]$device) {
-        $v = $device.IsOutput -eq ($this.kindOfDevice -eq 'Output')
+        $required = 'IsOutput', 'Driver', 'Name'
+        $missing = $required | Where-Object { $null -eq $device.PSObject.Properties[$_] }
+
+        if ($missing) {
+            throw [System.ArgumentException]::new(("Invalid device object. Missing member(s): {0}" -f ($missing -join ', ')), 'device')
+        }
+
+        $expectsOutput = ($this.kindOfDevice -eq 'Output')
+        if ([bool]$device.IsOutput -ne $expectsOutput) {
+            throw [System.ArgumentException]::new(("Device direction mismatch. Expected IsOutput={0}." -f $expectsOutput), 'device')
+        }
+
         $d = $device.Driver
         $n = $device.Name
 
-        if ($v -and $d -is [string] -and $n -is [string]) {
-            if ($d -eq '' -and $n -eq '') {
-                $this.Clear()
-                return
-            }
-            if ($d -in $this.drivers.Values) {
-                $this.Setter($d, $n)
-                return
-            }
+        if (-not ($d -is [string])) {
+            throw [System.ArgumentException]::new('Invalid device object. Driver must be a string.', 'device')
         }
-        Write-Warning "Invalid device object provided to Set method."
+        if (-not ($n -is [string])) {
+            throw [System.ArgumentException]::new('Invalid device object. Name must be a string.', 'device')
+        }
+
+        if ($d -eq '' -and $n -eq '') { $this.Clear(); return }
+        if ($d -notin $this.drivers.Values) {
+            throw [System.ArgumentOutOfRangeException]::new('device.Driver', $d, 'Invalid device driver provided to Set method.')
+        }
+
+        $this.Setter($d, $n)
     }
 
     [void] Clear () {