Feature	Specification
Physical
Formatted Capacity	320 072 MB
User Sectors per Drive	625 142 448
Interface	40-pin EIDE
Form Factor	3.5-inch
Actuator Type	Voice coil
Bytes per Sector	512 standard
Dedicated Landing Zone	Yes
Actuator Latch/Auto Park	Yes
Dimensions (H × L × W)	Approximately 1.028 × 5.787 × 4.0 inches (26.1 × 147.0 × 101.6 mm)
Weight	1.32 lb (0.60 Kg) ±10%
Performance
Data Transfer Rate	Buffer to disk: 748 Mbits/s (maximum) Buffer to host (maximum burst rates): 100 MB/s (Mode 5 Ultra ATA) 66.6 MB/s (Mode 5 Ultra ATA) 33.3 MB/s (Mode 4 Ultra ATA)
Seek Time	Full stroke read: 21 ms (average) Read: 8.9 ms (average) Track-to-track: 2.0 ms (average)
Average Latency	4.2 ms
Rotational Speed	7200 RPM
Cache	Read: Adaptive Write: Yes
Buffer	2 MB
Drive Ready Time	9.0 sec (average)
Start/Stop Cycles	50 000 minimum
LBA Support	Yes
IORDY Support	Yes
Error Rate (Non-Recoverable)	<1 in 1014 bits read
Power
Input Voltage	12 V ±10% 5 V ±5%
Average Usage	12 V 5 V Power Read/Write: 460 mA 440 mA 7.75 W Idle: 450 mA 420 mA 7.5 W Standby: 20.75 mA 75 mA 0.6 W Sleep: 20.75 mA 75 mA 0.6 W Notes: Western Digital Gateway Part Numbers 5508810R compatible with the following Models: GM5072 Media Center Computer, GT5034 Media Center Computer