From ActiveWin: “Intel has today released to the world new USB 2.0 drivers for Windows XP (1.08 MB). These new USB 2.0 are built around Microsoft reference drivers and carry the build number 5.1.2600.41. Note that before installing these drivers you need the Microsoft hotfix Q312370.”
I took the risk on my box runing XP…. no difference in performance for USB2 devices…..