Get the performance you expect from your new UDMA IDE drives by using our Ultra ATA 80-conductor ribbon cables. The new high-speed UDMA interface allows host computers to send and retrieve data faster removing bottlenecks associated with system performance. You will need the next generation of IDE cable to connect the new UDMA hard drives. This 40-pin, 80-conductor cable permits higher data transmission rates, reduces crosstalk, and improves signal integrity by providing 40 additional ground lines between the 40-pin IDE signal and the ground lines. Ultra ATA EIDE ribbon cables are designed for use with Ultra 133/100 and Ultra 66 drives, and backards compatible with Ultra33, IDE/ATAPI hard drives, CD-ROMs, CD-R/CD-RWs, tape drives, zip drives, LS-120s and other IDE/ATAPI devices. Please note: Your burst rates may vary due to cable length, type of drive and controller used. Connectors: 80-wire/40-pin IDC Female to Two 80-wire/40-pin IDC Females. Devices Supported: 2. Cable Type: Type-B. Connector Layout: Blue connector: System, Gray connector: Slave connector, Black connector: Master. Connector Spacing: 0-12-18in. Recommended for maximum performance of Ultra66/100/133 drives.