WD Caviar Blue 160GB 3.5" SATA hard drive (part WD1600JD-40HBC0) spinning at 7200 RPM with 8MB cache and 1.5GB/s interface throughput. Standard enterprise-grade storage for legacy servers, NAS arrays, and external enclosures requiring mid-capacity capacity storage. SATA 1.5Gb/s connectivity supports older motherboard chipsets and RAID controllers. Suitable for archival, backup, and non-performance-critical applications where capacity and reliability matter more than speed. Refurbished units have been tested and are guaranteed fully functional; available via quote request.