The WD6400AAKS-65Z7B0 is a Western Digital Caviar Blue 640GB 3.5-inch internal hard drive operating at 7,200 RPM with 16MB cache. It features a SATA II (3Gbps) interface with standard 7-pin connector, delivering sustained throughput suitable for general-purpose storage in desktop and entry-level server environments. The 640GB capacity makes it ideal for legacy systems, archival applications, or cost-effective secondary storage where high-performance SSDs are not required. Compatible with standard SATA-enabled motherboards and storage controllers across Windows and Linux platforms. This refurbished unit has been tested and is guaranteed to meet original manufacturer specifications; available via quote.
