Seagate Desktop HDD Barracuda 7200.9 250GB SATA NCQ 3Gb/s (20pk), 250 GB, 7200 RPM, 8 MB, Serial ATA II Seagate Desktop HDD Barracuda 7200.9 250GB SATA NCQ 3Gb/s (20pk). HDD capacity: 250 GB, HDD speed: 7200 RPM, Storage drive buffer size: 8 MB, Interface: Serial ATA II