Gateway 40GB 5M 40GPP Hard Disk Drive - 5502080

Component	Hard Drive
Manufacturer	Western Digital
Model	WD400EB
Average Seek Read	12.8 ms average 19 ms maximum
Average Seek Write	13.8 ms average 20 ms maximum
Track-to-Track Seek	2.0 ms average
Full Stroke Seek	28.5 ms average
Index Pulse Period	8.3 ms (nominal)
Average Latency	5.35 ms (nominal)
Rotational Speed	5 400 RPM (nominal)
Controller Overhead	0.3 ms average
Data Transfer Rate (maximum) - Buffer-to-Host	100 MBps (Mode 5 Ultra ATA) 66.6 MBps (Mode 4 Ultra ATA) 33.3 MBps (Mode 2 Ultra ATA) 16.6 MBps (Mode 4 PIO) 16.6 MBps (Mode 2 multi-word DMA)
Data Transfer Rate (maximum) - Buffer-to-Disk	593.5 Mbps maximum
Interleave	1:1
Buffer Size	2 MB
Error Rate - Unrecoverable	<1 in 1014 bits read
Spindle Start Time - From Power-On to Drive Ready	6.0 s average 10.0 s maximum
Spindle Start Time - From Power-On to Rotational Speed	4.5 s average 7.0 s maximum
Spindle Stop Time	5.1 s typical
Contact Start/Stop Cycles (CSS)	40 000 minimum
Formatted Capacity	40 020 MB
Interface	40-pin EIDE
Actuator Type	Rotary voice coil
Number of Disks	1
Data Surfaces	2
Number of Heads	2
Bytes per Sector	512
User Sectors per Drive	78 165 360
Servo Type	Embedded
Recording Method EPR4	Rate 16/17 PRML
ECC	Reed Solomon
Head Park	Automatic
Height	1.028 inches
Length	5.787 inches
Width	4.00 inches
Weight	0.947 lbs.
Input Voltage Requirements	+5.0 V ±5% and +12.0 V ±10%
Operating Temperature	5 to 55° C (41 to 131° F)
Non-Operating Temperature	–40 to 65° C (–40 to 149° F)
Operating Humidity	5 to 85% RH non-condensing 33° C (maximum wet bulb)
Non-Operating Humidity	5 to 95% RH non-condensing 33° C (maximum wet bulb)