Western Digital Caviar 15GB 3.5-inch hard drive (part no. WD150BB-60BNA1) featuring 7200 RPM spindle speed, ATA-100 (IDE) interface, and 2MB cache. Designed for desktop workstations and older server environments requiring modest storage capacity. Typical applications include legacy system builds, archival storage, and replacement installations in systems from the late 1990s through early 2000s. Interface compatibility limited to IDE-based motherboards and controllers; not suitable for modern SATA or SAS architectures. Mechanics and electronics have been tested and guaranteed to specification; available via quote.