Portable U Disk Type Telescopic USB3.0 Interface External M.2 NGFF SSD Enclosure(Silver) (Not Inclube Hard Disk) Features: With a standard USB 3.0 port and the data transmission rate can up to 5Gbps, you don't have to wait much longer to transfer files. The aluminum alloy case can rapidly cool the M.2 NGFF SSD case to extend its service life. Hard aluminum alloy protects your hard disk from data loss. With USB3.0 port that complies with the USB3.0 specification, you can connect SSD to your computer. Strong compatibility, suitable for Windows 2000/SP/7/8, For MAC OS 8.6 and later. Telescopic USB interface design, when you do not use the hard disk, you can retract the USB interface to hard disk box, to prevent interface damage. Specifications: Material: Metal Size: Approx. 10*4*2cm/3.94*1.57*0.79inch Color: Black, Silver, Golden(optional) Data Transmission Rate: 5Gbps Type: M.2 NGFF SSD Case Interface: USB3.0, Type-A To NGFF B Key Compatible Model: For SATA NGFF SSD 2230 2242 Compatible System: For Windows 2000/SP/7/8, For MAC OS 8.6 And Later Package list: 1 x External SSD Enclosure 1 x Screwdriver