Western Digital WD2500SD 250GB 3.5" SATA Hard Drive WD Caviar Desktop HDD

Western Digital WD2500SD 250GB 3.5" SATA Hard Drive WD Caviar Desktop HDD

The Western Digital WD2500SD is a 250GB 3.5-inch Serial ATA internal hard drive from Western Digital's WD Caviar line. Designed for desktop computers, it connects via the standard SATA interface and draws power through both the SATA power connector and the legacy 4-pin Molex connector — making it compatible with both newer SATA-native builds and older systems using a Molex-to-SATA power adapter.

Specifications & What's Included

• Brand: Western Digital
• Model: WD2500SD (WD Caviar Series)
• Part Number: WD2500SD-01KCB0
• Capacity: 250 GB (LBA 488,397,168 sectors)
• Form Factor: 3.5-inch
• Interface: SATA (Serial ATA)
• Power: 5VDC @ 0.92A / 12VDC @ 0.90A
• Connectors: SATA data port, SATA power connector, legacy power connector
• Jumper notes: Master/Slave jumper not required for SATA; pins 1–2 disable SSC (Spread Spectrum Clocking); pins 3–4 enable PM2 (Power-Up in Standby)
• Drive only — no cables or mounting hardware included

Applications

The WD Caviar line was Western Digital's mainstream desktop hard drive series throughout the late 1990s and 2000s, widely used in consumer and business desktop PCs. The WD2500SD dates from the mid-2000s transition era when SATA was replacing PATA (IDE) as the standard desktop drive interface. These 3.5-inch SATA drives are still useful today as secondary storage, backup drives, or replacements in older desktop systems, NAS enclosures, and DVRs that accept standard 3.5-inch SATA drives. The 250GB capacity is well-suited for archival storage, media, or general file storage in legacy builds.