1. The riser card adopts differential pair wiring and supports PCI-E 4X signal 2. Use this adapter card to convert the M.2 NGFF interface to a normal PCI-E X4 interface. There are 2 fixed holes on the board, 22 x 60mm and 22 x 80mm, according to the card in your machine The length of the slot can be broken and positioned 3. Wiring mode: If you connect the USB cable with a 1X to 16X adapter cable, you don' need to insert a small 4PIN power cord on the M2 adapter card. 4. Support all Windows systems, LINUX , no driver required 5. Easy to use and install, convenient and fast Product parameters: Product name: NGFF M.2 Key M adapter card Product model: NGFFP4X-N02 Product interface: M.2 KEY-M Support system: WINXP WIN7 WIN8 WIN10, LINUX, Colour:White Material:PCB+metal Size:80x23mm Package Contents: 2 x Adapter card 2 x 4PIN power cord 2 x screwdriver Only the above package content, other products are not included. Note: Light 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.