Is your GPS receiver a true USB? or a serial but with a USB adapter? Mine's serial but with a USB adapter. The receiver has a mini DIN plug. The receiver's mini DIN plug is interchangeable with serial cable or an USB cable. Mine came with the USB cable. The USB cable has a 1 cubic inch black box on the box that does the serial to USB conversion. That's why after I installed the Copilot software and configured the CP receiver I got the "Cypress USB HID (COM 7)" in my device manager. I can goto the advance propority setting and change the COM port number.