Features: 1.Wear Resistance: The 19 pin expansion card has reliable anti oxidation ability, good conductivity and wear resistance 2.4 Layer Circuit Board: The M.2 MKEY PCIe to USB 3.1 expansion card adopts 4 layer circuit board, which ensures strong anti interference ability 3.High Speed Transmission: The M.2 MKEY PCIe to USB 3.1 adapter ensures the stability of PCIE high speed signal transmission, data integrity, and impedance matching 4.Bottom Reinforcement: The bottom of the type c 19 pin expansion card has been reinforced to keep the expansion card from changing shape 5.Wide Compatible: The type c 19 pin adapter is compatible with USB 3.1 and below, for Win XP, for Vista, for Win7 (drivers need to be installed), for Win 8, for Win10 System Comes with Driversspecification:Item Type: 19 Pin Expansion Card Material: PCB Input Interface: M.2 M Key Compatible: USB 3.1 and Below Compatible: For Win XP, for Vista, for Win7 (drivers need to be installed), for Win 8, for Win10 System Comes with Drivers Transfer Rate: 5GbPackageList:1 x 19PinExpansionCard1 x Screwdriver1 x Screw1 x 4Pin Line