Brand: Western Digital · SKU: WD400BB-55JKC0 · MPN: WD400BB-55JKC0 · Category: Storage
This appears to be a model number for a Western Digital Caviar series internal hard drive. Based on related WD400BB models, it is likely a 40GB, 7200 RPM, 3.5-inch desktop drive utilizing an ATA-100 (EIDE) interface and featuring a 2MB buffer/cache. The suffix '-55JKC0' likely denotes a specific revision, plant, or country code.
| Capacity | 40 GB |
|---|---|
| Interface | ATA-100 (EIDE Ultra ATA100) |
| Form Factor | 3.5-inch |
| Spindle Speed | 7200 RPM |
| Bytes Per Sector | 512 |
| Average Seek Time | 8.9 ms (Read) / 10.9 ms (Write) typical |
| Buffer Size (Cache) | 2 MB |
| Warranty | Varies, often 1 year when sold refurbished |
| Weight | 1.32 lbs (approximate for the series) |
| Dimensions | 3.5" x 1/3H (Form Factor), Width: 4 in, Depth: 5.8 in, Height: 1 in (approximate for the series) |
The WD400BB is part of the Western Digital Caviar line, designed as an internal desktop hard drive. It offers 40GB of storage capacity, runs at 7200 RPM, and uses the older but widely compatible ATA-100 interface. It features a small 2MB buffer for performance enhancement and includes S.M.A.R.T. features for self-monitoring.
Yes, this Western Digital Caviar WD400BB 40GB ATA/IDE Hard Drive (WD400BB-55JKC0) 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 40GB ATA/IDE 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-55JKC0.