Looks like the URLs didn't survive Tom's filters, but if you google B000K02UP8 , it should come up with a picture ad of the device with a (Prolific PL2303HX Chipset)
My computers are HP laptop and homemade, both running XP Pro ver 5.1 SP3
Also tried the adapters in a machine running Win 7 ver 7000? beta - same end result.
Ed