The Western Digital WD Purple Pro 12TB 3.5" SATA III 7200RPM 256MB WD121PURP is an internal desktop drive suitable for PC use. With a storage capacity of 12TB, this HDD features a rotation speed of 7200 RPM and a cache memory of 256MB. It also offers a read speed of 245MB/s and a transfer rate of 6 Gbps, making it a reliable choice for high storage needs. The drive is equipped with features like S.M.A.R.T. and NCQ, ensuring reliable performance and durability.