DESC: Seagate's Barracuda ATA V with Serial ATA Interface leverages the mechanics of the industry's quietest 7200 rpm desktop drive. This Barracuda ATA V offers 40GB capacities with an 8MB cache for mainstream, high-performance PCs, and entry-level servers. The product features all FDB motors, superior reliability and the next generation interfaceSerial ATA. The SATA Barracuda includes Seagate's exclusive 3D Defense System.