SMAKN&reg; USB3.0 to M.2 NGFF SSD Mobile hard disk box External Enclosure Storage Case Straight connection don't need a USB cable.High end quality product with sleek case design .Size:115 mm * 25 mm * 9 mm;Supports 22*42 mm,22*60 mm and 22*80 mm three sizes ,M.2 NGFF(socket2,SATA) SSD Drives. USB 3.0 interface. Plug and Play.Compatible with Windows 2000/xp/Vista/7/8/mac os 7.0 and above.About M.2 NGFF SSD interface standard: *Socket 2(B key):there are SATA(such as THNSNH128G8NT/ THNSNH128GDNT/MZNTD256HAGM models of SSD) and PCI-E x2(such as PX-AG128M6E/PX-AG256M6E/PX-AG512M6E/SD6PP4M models of SSD) two different transfer mode. Socket 3(M key):PCI-E x4(such as MZHPU128HCGM MZHPU256HCGL and MZHPU512HCGL models of SSD). USB port can't meet the SSD rated current of the fault phenomenon: *A: Unable to identify the SSD, but adapter card not to install SSD connected computers,the computer can identify new hardware. *B: Adapter card to connect the computer after constantly connected and disconnected. *C: Products to connect the computer, can read data of hard disk drive, but can't write data to the hard disk or format the hard disk partition, as long as write data will disconnect or a computer without any response (Hard disk has bad sectors will have this phenomenon, please pay attention to distinguish).