Overview
The Western Digital WD400JD-75HKA1 is a 40GB internal hard drive from the Caviar SE series, designed for desktop storage and backup applications. Operating at 7200 RPM with an 8MB cache and SATA 3Gb/s interface, this drive delivers consistent performance for data-intensive tasks. The unit features WhisperDrive technology that reduces operational noise while maintaining cool temperatures even under sustained use.
Key Features
- 40GB storage capacity with 7200 RPM spindle speed for fast data access
- 8MB write buffer cache for improved performance
- SATA 3Gb/s serial interface for reliable connectivity
- 3.5-inch form factor compatible with standard desktop towers
- WhisperDrive noise reduction technology for quiet operation
- Mean Time Between Failure (MTBF) of 1.2 million hours
Technical Specifications
- Capacity: 40GB
- Interface: SATA 3Gb/s
- Speed: 7200 RPM
- Cache: 8MB
- Form Factor: 3.5-inch
- Connector: 7-pin SATA power
- MTBF: 1.2 million hours
Typical Applications
The WD400JD-75HKA1 is well-suited for:
- Desktop system storage and backup
- General-purpose file storage on older PC systems
- Hard drive donor and recovery applications
- Legacy system replacements requiring SATA-compatible drives
Compatibility & Replacements
Compatible With
- Desktop PC systems with SATA motherboards (pre-2010 era)
- Systems requiring 3.5-inch IDE/SATA form factor drives
- Any SATA 3Gb/s controller or motherboard slot
Replaces / Drop-In Replacement For
- Western Digital Caviar SE 40GB models (same revision)
- OEM and Dell/HP/Compaq systems originally equipped with WD400JD drives
- Compatible with systems expecting WD400-series SATA desktop drives
Works With
- Any operating system supporting SATA storage (Windows XP, Vista, Server 2003/2008, Linux distributions)
- Standard BIOS and UEFI firmware
- Partition recovery and data recovery software tools
- Boot environments and diagnostic utilities compatible with SATA
