c#.NET USB device persistent identifier

Question

I am looking for a way in C# to have a persistent (across when end-users unplug a hub/restart their computer) identifier for USB slots, more specifically, SD card readers. Drive letters are not always assigned to the same slot, but I need a way to identify Slot A physically; as once I can identify it, I can make the connections to a drive letter.

So my question(s):

Is this possible?
If so, how would I go about getting these identifiers?

Community · Accepted Answer · 2017-05-23 12:31:14Z

1

WMI class Win32_USBHub.

ManagementObjectSearcher sidQuery = new ManagementObjectSearcher("Select * From Win32_USBHub");
ManagementObjectCollection results = sidQuery.Get();
List<String> deviceID = new List<String>();
foreach (ManagementObject result in results)
{
   deviceID.Add(result["DeviceID"]);
}

See more here : Get List of connected USB Devices

Documentation about Win32_USBHub : http://msdn.microsoft.com/en-us/library/windows/desktop/aa394506(v=vs.85).aspx

edited May 23, 2017 at 12:31

CommunityBot

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answered Aug 1, 2013 at 15:03

TheMightyX2Y

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2 Comments

user2588050 Over a year ago

Thanks! One more question, is there a way to find out if Windows has assigned the USB device any letters (assuming the device is a drive and not a keyboard for instance) and if so, what they are/it is?

user2588050 Over a year ago

Nevermind, I found the solution to the comment question. link

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