MDD 500GB 5400RPM 64MB Cache SATA 6.0Gb/s Slim 7mm 2.5" Notebook Hard Drive
Rotation Speed: 5400RPM. Buffer Size: 64MB Cache. Buffer 64MB Cache. Capacity: 500GB. Formatted Capacity 500GB. Interface:SATA III (6.0Gb/s) (Backward compatible with SATA II 3.0Gb/s). Form Factor 2.5" Hard Drive.