The Western Digital Purple 2TB 3.5" SATA 5400RPM Surveillance Hard Drive (WD20PURX) is a reliable internal desktop drive designed for use with both PC and Mac computers. With a high storage capacity of 2TB, this HDD is ideal for storing large amounts of surveillance footage or other data. The purple color and compact 3.5-inch form factor make it a sleek and functional addition to any desktop setup. The drive offers fast read speeds of up to 500MB/s and is compatible with SATA III and SATA interfaces. With a cache size of 64MB and a storage format of HDD only, this Western Digital drive is a dependable choice for all your storage needs.