I have an Asus P4B533-E with a Promise MB FastTrak133 Lite RAID-Controller on Board. As I need a 5th IDE port I thought I can connect a HD to it and use it as an UltraDMA133 controller. The controller itseld detects the HD and after configuring it via the controller everything was fine. I used driver version .21, the HD was detected by XP. But I experienced bad timeouts with that configuration (mouse hung for 2 seconds, HD was not accessible for some seconds and the event log reported errors, too...) After dealing with drivers after .21 I had the problem that XP didn't list the drive anymore. Did anyone experience similar problems and got a solution ?