Quantum DAT 160 Internal Drive Kit, SAS, 3.5" and 5.25". Native capacity: 80 GB, Compressed capacity: 160 GB, Media types supported: DAT160. Backup rate compressed performance: 21.6 GB/h, Backup rate native performance: 21.6 GB/h, Drive device speed: 6457 RPM. Drive device, buffer size: 32 MB. Interface: Ultra3 SCSI, USB 2.0, SAS. Dimensions (WxDxH): 101.6 x 41.3 x 176.3 mm, Weight: 850 g