You cannot add "CLASSYTEK WD Purple WD20PURX 2TB Surveillance 3.5" Internal Hard Drive - SATA - 64 MB Buffer" to the cart because the product is out of stock.
Internal/External Internal
Form Factor M.2 2280
Interface SATA III 6Gb/s
Max. Sequential Read Speed Up to 550 MB/s
Max. Sequential Write Speed Up to 520 MB/s
NAND Type Samsung V-NAND