1. Wear Resistance: The 19-pin expansion card features reliable anti-oxidation, good conductivity, and wear resistance. 2. 4-Layer PCB: The M.2 MKEY PCIe to USB 3.1 expansion card uses a 4-layer circuit board, ensuring strong anti-interference capability. 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 deforming. 5. Wide Compatibility: The Type-C 19-pin adapter is compatible with USB 3.1 and below, for Win XP, for Vista, for Win7 (drivers must be installed), for Win 8, for Win10 Systems. Comes with drivers. 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 must be installed), for Win 8, for Win10 Systems. Comes with drivers. Transmission Speed: 5Gb 1 x 19 Pin Expansion Card 1 x Screwdriver 1 x Screw 1 x 4Pin Line