M key M.2 NGFF SSD to PCI-E X4 adapter or B key M.2 NGFF SSD to adapter. Support size: 22X30 mm, 22X42 mm, 22X60 mm, 22X80 mm M.2 NGFF SSD. Support system: XP/Vista/7/8/10, Linux, for MacOS. With cooling holes to air circulation. Parameter: Type: M.2 NVMe NGFF SSD to PCIE Adapter Internal Interface: M Key ,B Key, B+M Key Transmission speed: 32Gbps (NVME) , 6Gbps (NGFF) Support Slots: PCI-E 3.0 X4 GEN3 (Compatible with X4 X8 X16 slot) Support Devices: PCI-E specification m.2 NVMe and specification M.2 NGFF disk Support System: for XP/Vista/7/8/10, Linux, for MACOS. Colour:black Material:PCB Package Contents: 1 X riser card 1 X full-height bezel 1 X half-height bezel 1 X cable 1 X screwdrive 1 set X screw studs (pictured above) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.