Product Detail Capacity: 1 TB. Rotational Speed: 7200 rpm. Cache: 32 MB Interface: SATA 3Gb/s. Max. External Transfer Rate: 300 MB/s Operating: 70G @ 2ms. Non-operating: 350G @ 2ms Requirement: +5 VDC (+/-5%), +12 VDC (+/-10%). Startup current(max.): 1.5 A(+5V), 2.0 A(+12V) Power Consumption(Idle): 4.4 W. Dimensions (WxLxH): 101.6(+/-0.25) x 147 x 26.1 mm . The "Hitachi 1TB HDS721010CLA332 SATA2 U300 7200rpm Hard Drive 32MB" is best product for you. We recommended Hitachi 1TB HDS721010CLA332 SATA2 U300 7200rpm Hard Drive 32MB