Would have been ideal if all compatible operating environments had been listed (as is, I just took a chance and tried it - luckily, it worked).
File was named "X223Wv Vista WHQL Driver.zip", implying Vista, but it worked perfectly with Win2K ... and I'd say it's a good bet it'll do fine in WinXP also. (Why didn't Acer make this easily available on the CD that came with my monitor?! <shakes head in disbelief>)
maybe that's because its the actual driver, not a driver installation package... this is the file you tell your computer to look for, there is NO need to have a whole exe file... file worked FINE for the 5 of them that we put in on terminals at our company...
Try not to review something that works as garbage... this file works..