Two Ultra 133 IDE channels with 40 pin/80 wire connectors Supports up to 4 IDE/ATA devices RAID Level 1 (Mirroring) - an identical copy of your data is placed on another drive RAID Level 0 (Striping) - increases sustained data transfer rates RAID Level 0 + 1 Supports any IDE hard drive DVD CD-ROM or ZIP drive Windows 98/2000/ME/XP/NT 4.0 compatible