WD Red Plus 4TB NAS 3.5" SATA Internal HDD 5400RPM 128MB (WD40EFZZ)

• Model and MPN: WD40EFZZ. • Storage Capacity: 4TB. • Drive Type: Internal NAS HDD. The drive features NASware technology, a 5400 RPM rotational speed, 128MB cache, CMR recording technology, and a SATA III 6 Gb/s interface for dependable network storage performance.