Brand: Western Digital · SKU: WD400BB-00HEA0 · MPN: WD400BB-00HEA0 · Category: Storage
The Western Digital Caviar WD400BB is a 40GB Internal Hard Disk Drive (HDD) designed for desktop computers. It features a 3.5-inch form factor, an IDE/EIDE Ultra ATA/100 interface, and a rotational speed of 7200 RPM. Key specifications include a 2MB buffer size, 8.9 ms average seek time (read), and a capacity of 40,021 MB (40GB). It uses 2 platters and 4 heads according to some specifications, or 1 platter and 1 head according to others for this model series.
| Capacity | 40 GB |
|---|---|
| Interface | IDE / EIDE Ultra ATA/100 |
| Form Factor | 3.5-inch |
| Bytes Per Sector | 512 |
| Rotational Speed | 7200 RPM |
| Buffer Size (Cache) | 2 MB |
| Average Seek Time (Read) | 8.9 ms typical |
| Warranty | Varies (Often sold as refurbished with a 30-day to 1-year seller warranty) |
| Weight | N/A |
| Dimensions | 3.5" Form Factor (Approx. 101.6 mm Width x 147 mm Depth x 25.4 mm Height) |
The WD400BB is a legacy Western Digital Caviar series internal hard drive with 40GB capacity, running at 7200 RPM and connecting via an Ultra ATA/100 interface. It was built for desktop PC use.
Yes, this Western Digital Caviar WD400BB Hard Drive (WD400BB-00HEA0) is 100% genuine Western Digital hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Western Digital Caviar WD400BB Hard Drive includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the WD400BB-00HEA0.