usb-1 problems

I’m looking for someone who has successfully installed and operated the ARC-XT Pro Software with the USB-1 cable interface to a Windows OS 7 laptop. The laptop has three (3) USB Comm ports. It does not have a RS 232 connection. With BUTEL assistance I got the correct driver for the USB-1...

I have a Toshiba Laptop with Windows 7 using the USB-1 with the Prolific drivers. I have the driver Prolific 3.3.11.152 dated 3/12/2010 and have completly deleted and reloaded drivers several times. When it loads it lists as not working properly. Ocaisonally it works but then after loading my...