Summary: I got it and it works with Windows XP without any problem. Even on the box said that it works with Windows XP. No problem at all. Anyway, I did the driver update as the reviewer below suggested. Thanks.

Summary: i bought this product to use with a BASIC stamp and it does work, but so far only with a pc. i own a mac and i couldn't find a driver for os x. the company's website offers a driver for mac(most likely not os x), but the link does not work. i have an email into the technical support, but after a while searching for a driver, i doubt it will work with os x.

Summary: This, like most of these USB to serial adaptors, works under Mac OS X with the Prolific device driver. This is not included, but can be downloaded from the IOgear website.

Once I got the driver installed, it worked very well. When you plug it in, devices appear in /dev/ that work as you'd expect serial devices to work. I've only tried it with programs that I wrote, but friends have with GPS software and other things that are widely used.

I didn't try it at a baud rate higher than 19.2k because the devices I'm talking to won't go any faster, but I imagine it will go faster. (It says in the manual it'll do 500kbps.)

Overall, I'm very pleased, but without the driver, it'd be useless, and it can be tricky to find.