Win XP Promise FastTrak TX4000/S150 TX Series (tm) Controller: The FastTrak TX4000 supports RAID 0, RAID 1, and RAID 0+1 configurations. With a FastTrak TX4000 controller, you also get the benefit of Promise Technology's industry-leading ATA feature set. To assure faster transfers, Promise's ATA software uses sophisticated handling techniques to make data transfers more efficient and minimize overloading the host system CPU and slowing system response.