HGST Travelstar 2.5-Inch 500GB 7200RPM SATA III 32MB Cache SATA 6Gbps Internal Bare or OEM Drives (HTS725050B7E630) 500GB Capacity High 7200 RPM Performance 7mm HDD, Direct replacement for 9.5mm 2.5 inch drives First 6 Gb/s SATA interface on a mobile HDD Low power consumption