Allows user to use standard M.2 M-Key nVME SSD to PCIe x4 slot of the Desktop PC Support 2242/2260/2280 type M.2 Card dimension Only support M.2 Socket 3 PCI-e-based M Key SSD, doesn't support M.2 SATA bus B key SSD The cooling fan is designed for active cooling mode, the SSD heat can be discharged in time LED switch can control the LED Power ON/OFF, it will not bring the dazzling feeling when you use it in the night Material: PCB Model No.: nvme SSD to PCI-E 4X Extension Cable Type: PCI-E Riser Cable Length: A: 50mm Colour:Black Package Contents: 1 x M.2 SSD to PCI- E 4X Adapter 4 x M2 Screw 2 x M.2 Nut 1 x Screwdriver 3 x PCB Extension Board 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.