How to identify a USB device given its VID and PID

The Vendor ID and Product ID are stored in the USB device itself, so to change them you would have to have know what chips are on the device and know how to reprogram them. The reprogramming (if possible) would probably require extra hardware which is likely to be more expensive than the alternative of just buying another thumb drive.

What file system are you using (e.g. NTFS, ext3)? Ideally, your BIOS would be able to read the name of the volume and display that to you, the same way Windows and Linux do when you plug in a thumb drive.

Here's some code I've written based on what I've found so far. There may be a better way to do this.

    public static void MyMethod()
    {                            
        System.Management.ManagementClass USBClass = new ManagementClass("Win32_USBDevice");                
        System.Management.ManagementObjectCollection USBCollection = USBClass.GetInstances();

        foreach (System.Management.ManagementObject usb in USBCollection)
        {
            string deviceId = usb["deviceid"].ToString();
            Console.WriteLine(deviceId);

            int vidIndex = deviceId.IndexOf("VID_");
            string startingAtVid = deviceId.Substring(vidIndex + 4); // + 4 to remove "VID_"                    
            string vid = startingAtVid.Substring(0, 4); // vid is four characters long
            Console.WriteLine("VID: " + vid);

            int pidIndex = deviceId.IndexOf("PID_");
            string startingAtPid = deviceId.Substring(pidIndex + 4); // + 4 to remove "PID_"                    
            string pid = startingAtPid.Substring(0, 4); // pid is four characters long
            Console.WriteLine("PID: " + pid);                                        
        }            

        Console.ReadLine();
    }