Just bought a used 396t off of ebay. The person sent a usb cable with the scanner. I downloaded the uasd software and pl-2303 driver for usb? In the software i only have 2 settings com1 and com3 (my laptop has 1 serial port), but i'm using the usb cable. When i select com1 i get "communication error! Please check scanner remote settings". When i select com3 i get "This scanner model is not supported". I have tried all the baud rate settings in software and scanner. Can someone please help me with this? Thank you!