The Promise Ultra100 TX2 is a RAID storage controller that supports the latest 66MHz PCI motherboards. Not ready to take that leap into the future? The device is completely back compatible with 33MHz PCI systems or slower Ultra ATA/66/33 drives. The Ultra100 TX2 loves Windows OS, it automatically boost performance for all drives, even SCSI and ATA drives on the motherboard controller by up to 40%. Installation is a breeze, plug it into any PCI slot and attach your new Ultra ATA/100 or other Ultra ATA drive and the Promise BIOS does the rest. Don’t take chances with your data, invest in the Ultra100 TX2.