This is a compact NGFF (M.2) SSD Enclosure which will allow you to plug in your NGFF (M.2) SSD and use it as a portable external drive Please note that it supports SATA-based B Key SSD only. It does NOT support PCI-E based B key & any M key SSD By formatting this case with a drawer function, there is now extra protection for your hard drive. Reverse compatible with USB 3.0/2.0 and 1.1,and the speed turn with it. this enclosure is a perfect solution for data transfer or data backup! Straight connection don't need a USB cable. Small size,work well as USB Disk Driver,convenient to carry Hot-swappable, plug and play, no drivers needed. Support type 22*30mm 22*42mm 22*60mm 22*80mm Size SSD Please note that it supports SATA-based B Key SSD only. It does NOT support PCI-E based B key & any M key SSD. Full metal material