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 Drivers specification: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: 5Gb PackageList: 1 x 19PinExpansionCard 1 x Screwdriver 1 x Screw 1 x 4Pin Line