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Find USB to Serial device via WMI

Posted on 2007-10-09
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Last Modified: 2013-11-26
I'm writing an appication that talks to a small symbol scanner.

I need a way to find teh serial port the scanner is connected to. It uses a serial to USB adaptor that I know the name of and could easily identify. I've been trying to locate the device using WMI with no luck. I've tried several classes including the  Win32_SerialPort class which returns the serial port that is on the motherboard but not the one created by the USB to serial adapter. Trying to search the USB devices hasn't gotten me any closer either.

Here is an example of some of the code I've tried:
Dim scope As New ManagementScope("\\.\root\cimv2")
      scope.Connect()

      Dim objectQuery As New ObjectQuery("SELECT * FROM Win32_SerialPort")
      Dim searcher As New ManagementObjectSearcher(scope, objectQuery)
      Dim os As ManagementObject
      Dim moColl As ManagementObjectCollection = searcher.Get()
      Dim sep As String = vbCrLf
      For Each os In moColl
        ListBox1.Items.Add(os("Description").ToString())
      Next os
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Question by:Chad Penney
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