Windows8 and PL2303 HX REV D USB/serial cable not working.

I have done everything I can imagine to do to get the USB/serial cable to work with my device. Yaesu ft-950 radio. Comport is installed using the latest driver from your website. The ID utility says it is the correct chip. (PL2303 HX Rev D) It is com 3,9600.N,8,1. Windows 8 just wont talk to the radio. I had no problems on XP using the old Prolific cable. Got any suggestions.

Hi John-

Thanks for posting with your question and with great details on your setup!

First I’d recommend double checking your baud rate, flow control, etc. settings for the usb-serial adapter. One resource recommends the following:
“Make sure the cable is connected correctly, the COM port selection is correct, and the Bits per second default is set to 9600”

Unfortunately I didn’t find a similar document with recommended settings from Yaesu, but checking with them might help.

There’s a good thread below describing some of the relevant settings, with a reminder that you can’t have more than one application accessing the device on a given com port at a time.…

I hope this helps but please let me know if you have other questions!

Best wishes-

Jeff Everett
MCITP Enterprise Support Technician
Plugable Technologies