Western Digital 2.5" 250GB SATA Hard Drive

Details

Performance Specifications Rotational Speed 5,400 RPM (nominal) Buffer Size 8 MB Average Latency 5.50 ms (nominal) Seek Times Read Seek Time 12.0 ms Track-To-Track Seek Time 2.0 ms (average) Transfer Rates Buffer To Host (Serial ATA) 1.5 Gb/s (Max) Physical Specifications Formatted Capacity 250,059 MB Capacity 250 GB Interface SATA 1.5 Gb/s Physical Dimensions English Height 0.374 Inches ±0.008 inch Length 3.94 Inches ±0.010 inch Width 2.75 ±0.010 inch Weight 0.26 Pounds Metric Height 9.5 mm ±0.20 mm Length 100.2 ±0.25 mm Width 69.85 ±0.25 mm Weight 0.117 kg Environmental Specifications Acoustics Idle Mode 24 dBA (average) Seek Mode 0 26 dBA (average) Temperature (English) Operating 41° F to 140° F Non-operating -40° F to 149° F Temperature (Metric) Operating 5° C to 60° C Non-operating -40° C to 65° C Humidity Operating 8-90% RH non-condensing Non-operating 5-95% RH non-condensing Altitude (English) Operating -1,000 feet to 10,000 feet Non-operating -1,000 feet to 40,000 feet Altitude (Metric) Operating -305M to 3,050M Non-operating -305M to 12,200M Vibration Operating 0.00459 g²/Hz (10 to 500 Hz) Non-operating 0.05102 g²/Hz (10 to 500 Hz) Electrical Specifications Current Requirements 5 VDC Read/Write 500 mA Idle 400 mA Standby 50 mA Sleep 20 mA Power Dissipation Read/Write 2.50 Watts Idle 0.85 Watts Standby 0.25 Watts Sleep