Get the performance you expect from your new UDMA IDE drives, plus minimal clutter and better air flow, by using Round Ultra ATA100 Cables from Cables To Go. The new high-speed UDMA interface allows host computers to send and retrieve data faster removing bottlenecks associated with system performance. The 40-pin, 80-conductor Ultra ATA100 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. And these cables reduce over-heating and saves internal space within the CPU unit for easy movement when adding or removing hard drives, PCI cards or other adapters. Ultra ATA EIDE ribbon cables are designed for use with Ultra 100 and Ultra 66 drives, and backwards compatible with Ultra33, IDE/ATAPI hard drives, CD-ROMs, CD-R/CD-RWs, tape drives, zip drives, LS-120s and other IDE/ATAPI devices.