A script to search for USB connected devices using Windows registry

Invoke-USBDevSearch.ps1

function Invoke-USBDevSearch(){
	
	<#
    .SYNOPSIS
        Easy script that searches through connected USB devices filtering via a text string or guid.
	# Import
        ipmo .\Invoke-USBDevSearch.ps1
        # Run
        Invoke-USBDevSearch [-Search|-Guid] <search-term>
    .EXAMPLE
        # Search using full-text search
        Invoke-USBDevSearch -Search "ASIX"
        # Search using GUID search (ClassGUID)
        Invoke-USBDevSearch -GUID "{aaaaaaaa-bbbb-cccc-ffff-012345678910}"
    #>
	
    [CmdletBinding()]
    param
    (
	[Parameter(Mandatory=$False)]
	[string]$Search,
	[Parameter(Mandatory=$False)]
	[string]$Guid
    )


	function FullTextSearch(){
		return (($args[0].DeviceDesc -match $args[1]) -Or ($args[0].FriendlyName -match $args[1]) -Or ($args[0].Service -match $args[1]))
	}
	
	function GuidSearch(){
		$Device = $args[0]
		[Guid]$g = $args[1]
		
		return ($Device.ClassGUID -eq $Guid.toString())
	}

	if (((-Not $Search) -Or ($Search -match "^\s*$")) -And ((-Not $Guid) -Or ($Guid -match "^\s*$"))){
		
		Write-Host "[-] No search term was provided"
		return
	}

	if ($Search -And $Search -NotMatch "^\s*$" -And $Guid -And $Guid -NotMatch "^\s*$"){
		Write-Host "[!] WARN: Both Guid and Search detected, Guid will be ignored"
	}

	Get-ChildItem "HKLM:\sYSTEM\CurrentControlSet\Enum\USB" | ForEach-Object { 
		$keyname =(Split-Path $_.Name -leaf); 
		$key = (Get-ChildItem "HKLM:\sYSTEM\CurrentControlSet\Enum\USB\$keyname"); 
		$subkeyname =(Split-Path $key -leaf);
		try{			
			$k= (Get-ItemProperty "HKLM:\sYSTEM\CurrentControlSet\Enum\USB\$keyname\$subkeyname" -ErrorAction 'silentlycontinue') ;
			$k
		} 
		catch {}
		} | Where-Object {
			if($Search -And $Search -NotMatch "^\s*$"){
				FullTextSearch $_ $Search 
			} elseif($Guid -And $Guid -NotMatch "^\s*$"){
				GuidSearch $_ $Guid
			} 
		} -ErrorAction 'silentlycontinue'
	}