Hi.. I've been trying to get a USB 2 board installed in my system. I have a Promise Raid Controller card in slot 5 C/Labs Audigy in slot 4. I've tried the USB card (actually 2 cards - one SOYO, one Adaptec) in the other slots and I seem to get lockup each time. I tried moving the Audigy from slot 4 to slot 3 today and -voila- system lockup. I've read that this board may not take more than 2 PCI cards. Apparently slots 4 + 5 are on a different controller chip than slots 1, 2 and 3. Any suggestions or do I just bite the bullet and use on the on-board USB 1.1 - which does work? I don't want to remove the sound card or Raid controller. Thanks for the input, Ed