Device Not Found, libUsb .Net

Question

 public static UsbDeviceFinder MyUsbFinder = new UsbDeviceFinder(0x20DF, 0x0001);

 // Find and open the usb device.
 MyUsbDevice = UsbDevice.OpenUsbDevice(MyUsbFinder);

 // If the device is open and ready
 if (MyUsbDevice == null) throw new Exception("Device Not Found.");

See the screen shot below for where I pulled the VendorID and ProductID

So why does the USBFinder Keep returning null?

Answer 1

I have found libusb does this too, not sure why, but you can retry the search a few times.