Gday Chris
Although you get Code10, it doesnt always mean its a counterfeit chip, just a dud driver.
Google "prolific 2303 code 10" for lots of info
https://answers.microsoft.com/en-us/...ce87fcf?auth=1
is interesting
I wont touch W10 "just because", but lots of reports have come in that the latest prolific drivers dont always work under W10 and you need to use old drivers.
FTDI based chips dont seem to suffer as badly.
Andrew