Western Digital Corp. WD400UE hard drive specifications

Western Digital Scorpio 40 GB Mobile Hard Drive

WD Scorpio delivers best-in-class performance with power requirements comparable to much slower drives. In addition, you'll get the quietest 2.5-inch drive on the market, and the one with ruggedness, reliability, and data-protection features that actively watch over valuable data. WD Scorpio spins at 5400 RPM for fast performance but has power specifications similar to slower 4200 RPM drives. Low power consumption yields longer battery life and increased overall reliability. It features WD's exclusive WhisperDrive technology with SoftSeek algorithms to deliver the quietest 2.5-inch hard drive on the market. WD Scorpio provides ShockGuard to protect the drive mechanics and delicate platter surface from shocks, both when it's in use and when it's not. This leading-edge technology enables WD drives to meet the highest combined shock tolerance specifications in its class: 250 Gs while in operation, 900 Gs when it's idle. DuraStep Ramp locks the heads off the data disk to provide additional shock protection. Utilizing the most technologically advanced material available on the market, the drive is able to execute a minimum of 600, 000 load/unload cycles without contamination - up to twice the performance of its competitors. WD Scorpio has a rigid stainless steel cover, unlike other devices, that will withstand greater than 5 pounds of pressure - nearly 1.5 times the industry average without pinching the motor hub or other internal components.

Recommended software for Western Digital Corp. WD400UE status and S.M.A.R.T. monitoring is ActiveSMART www.ariolic.com

Western Digital Corp.

HDD Part Number

Hard drive health monitoring software
ActiveSMART by Ariolic Software. Click to download ActiveSMART


Device Type
Hard drive - Internal hard drive

Hard Drive

Form Factor

40 GB

Interface Type

Buffer Size
2 MB

Compliant Standards


Drive Transfer Rate
100 MBps

Seek Time
12 ms (average)

Track-to-Track Seek Time
2 ms

Average Latency
5.5 ms

Spindle Speed
5400 rpm


Storage Hard Drive / Non-Recoverable Errors
1 per 10^14

Start / Stop Cycles

Storage Controller


Expansion / Connectivity

1 x EIDE - 44 pin IDC

Compatible Bays
1 x Internal - 2.5"

Compatible Slots
x None


Microsoft Certifications
Works with Windows Vista


Power Device