Welcome to the store! 1,Abrasion Resistance: The 19-pin expansion card has reliable anti-oxidation ability, good conductivity, and abrasion resistance. 2,4-Layer Circuit Board: The M.2 MKEY PCIe to USB 3.1 expansion card adopts a 4-layer circuit board, ensuring 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 prevent the expansion card from changing shape. 5,Wide-Compatible: The 19-pin adapter of type c is compatible with USB 3.1 and lower, for Win XP, for Vista, for Win7 (drivers must be installed), for Win 8, for Win10 system comes with drivers Item Type: 19-Pin Expansion Card Material: PCB Input Interface: M.2 M Key Compatible: USB 3.1 and Lower Compatible: For Win XP, for Vista, for Win7 (drivers must be installed), for Win 8, for Win10 System comes with drivers Transmission Rate: 5 Gb 1 x 19-Pin Expansion Card 1 x Screwdriver 1 x Screw 1 x 4-Pin Line Your 100 percent satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!