24" 40-Pin (80-Wire) Ultra ATA 2-Drive Round Cable, Manhattan 337991 24" Ultra IDE 80-Wire Round Cable 3 Connectors for 2 DevicesRound cable design increases air flow inside case For Ultra ATA/100, Ultra ATA/66, Ultra ATA/33 and DMA, and with EIDE/IDE hard drives & CD-ROM drives Round cable design increases air flow inside case Blue