40GB Caviar Special Edition WD400JB Internal EIDE Ultra ATA/100 7200RPM Hard Drive with 8MB Cache

Description: The Western Digital Caviar SE EIDE 40 is a 40GB, standard hard disk drive.Compared to other standard hard drives on the market, it is very inexpensive at around $50.Its maximum internal data transfer rate of 73.9 MBps is fairly standard, compared to the typical hard drive.Its burst transfer rate is 100 MBps.This is a 7200 rpm drive and has an 8MB buffer.

Pros: None noted, given available product data.

Cons: None noted, given available product data.

Suitability: A standard hard drive, suited for general computing.

Value: Given its very inexpensive price, this hard drive has great features for the money.

CNET's Product Briefs are generated by a software tool that combines product specifications with knowledge of our editorial experts. They do not reflect hands-on assessment or labs testing. For more information about how we create Product Briefs, contact us.

• Manufacturer: Western Digital Corp.
• Part Number: WD400JB

• General

• Device Type Hard drive - Internal hard drive
• Width 4 in
• Depth 5.8 in
• Height 1 in
• Weight 0.9 lbs

• Hard Drive

• Form Factor 3.5" x 1/3H
• Capacity 40 GB
• Interface Type ATA-100
• Buffer Size 8 MB
• Features Shock Guard, Data Lifeguard

• Performance

• Drive Transfer Rate 100 MBps (external) / 73.9 MBps (internal)
• Seek Time 8.9 ms (average) / 21 ms (max)
• Track-to-Track Seek Time 2 ms
• Average Latency 5.5 ms
• Spindle speed 7200 rpm

• Reliability

• Storage Hard Drive / Non-Recoverable Errors 1 per 10^15
• Start / Stop Cycles 50,000

• Storage Controller

• Type None

• Storage Controller (2nd)

• Type None

• Expansion / Connectivity

• Interfaces 1 x ATA-100 - 40 pin IDC
• Compatible Bays 1 x Internal - 3.5" x 1/3H
• Compatible Slots x None

• Power

• Power device type None

• Miscellaneous

• Windows Vista Readiness Works with Windows Vista
• Compliant Standards RoHS

• Software / System Requirements

• Min Operating system Microsoft Windows Vista, Microsoft Windows 2000 / XP

• Environmental Parameters

• Min operating temperature 41 ?F
• Max operating temperature 131 ?F
• Operating humidity range 5 - 85%
• Shock Tolerance 20 g @ 2ms half-sine pulse (operating) / 200 g @ 2ms half-sine pulse (non-operating)
• Vibration Tolerance 0.75 g @ 20-300 Hz (operating) / 4 g @ 20-500 Hz (non-operating)
• Sound emission 35 dBA
• Max operating altitude 9840 ft

Western Digital Corp.

Manufacturer profile

• Website: http://www.wdc.com/