The Western Digital WD4003F Black 4TB 3.5" Internal HDD is a high-performance desktop hard drive designed for PC use. With a rotation speed of 7200 RPM and a cache size of 64 MB, this SATA III interface drive offers fast read speeds of up to 500MB/s and transfer rates of 300 Mbps. The sleek black color and compact 3.5-inch form factor make it compatible with a wide range of desktop setups. With a storage capacity of 4TB, this Western Digital drive is ideal for storing large amounts of data for both personal and professional use.