Features: 1.High Efficiency: This M.2 to PCIe expansion card can effectively reduce interface interference and wire loss, which ensures high efficiency. 2.4 Ports: This M.2 to PCIe graphics card expansion provides 4 ports, solving the problems of port shortage. 3.Anti Interference: This M.2 to PCIe expansion card features very strong anti interference ability, which ensures high stability of signal transmission and integrity. 4.Wide Compatibility: This M.2 to PCIe expansion card is suitable for OS X, for Windows and for Linux. 5.Reinforcement Treatment: The bottom of the card has been strengthened to prevent the deformation of product. specification:Item Type: M.2 to Pcie Expansion Card Material: Printed Circuit Board Model: PH410 Product Size: Approx. 22 x 80mm / 0.87 x 3.15in Product Ports: M.2 Mkey PCIE Number of Ports: PCIE X1 Ports x 4 Operating System: For OS X, for Windows, For Linux PackageList:1 x M.2 to Pcie Expansion Card 1 x Screwdriver 1 x Screw