HDD WD SATAII 500GB 32MB هارد وسترن

Rotational Speed 7,200 RPM (nominal)
Buffer Size 32 MB
Average Latency 4.20 ms (nominal)
Start/Stop Cycles 50,000 minimum
Read Seek Time 8.7 ms
Track-To-Track Seek Time 0.6 ms (average)
Full Stroke Seek 21.0 ms (average)
Buffer To Host (Serial ATA) 3 Gb/s (Max)
Transfer Rate (Buffer To Disk) 70 MB/s (Sustained)
Formatted Capacity 500,107 MB
Capacity 500 GB
Interface SATA 3 Gb/s
User Sectors Per Drive 976,773,168
Height 1.028 Inches (Max)
Length 5.787 Inches (Max)
Width 4.00 Inches (+/- 0.010 inch)
Weight 1.32 Pounds
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 250G, 1 ms
Idle Mode 28 dBA (average)
Seek Mode 0 33 dBA (average)
Operating 41° F to 140° F
Non-operating -40° F to 158° F
Operating 5° C to 60° C
Non-operating -40° C to 70° C
Operating 5-95% RH non-condensing
Non-operating 5-95% RH non-condensing
Operating(Altitude (English)) -1,000 feet to 10,000 feet
Non-operating -1,000 feet to 40,000 feet
Operating(Altitude (Metric)) -305M to 3,050M
Non-operating -305M to 12,200M
Linear(Vibration) 20-300 Hz, 0.75G (0 to peak)
Random 0.004 g²/Hz (10 to 300 Hz)
Low Frequency(Non-operating) 5-20 Hz, 0.195 inches (double amplitude)
High Frequency 20-500 Hz, 4.0G (0 to peak)
Read/Write(Current Requirements) 550 mA
Idle 450 mA
Standby 16 mA
Sleep 16 mA
Read/Write(Power Dissipation) 10.75 Watts
Idle 8.90 Watts
Standby 2.00 Watts
Sleep 2.00 Watts