Colour: black Material: plastic Package Contents: 2 x PCI Express Expansion Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. [Wide compatibility] This card complies with PCI Express X4, X8, X16 slots. The USB 3.2 port is backward compatible with 3.0 and 2.0. The is compatible with 7, 8, 10 (32/64 bit) and OS 10.8.2 and When installing a pci-e adapter card, Win 10, OS and Linux do not need a driver, and a driver must be installed in 7 systems. Insert the PCIe into the USB 3.2 Gen 2 card into the PCI Express (4X) slot, you can upgrade your desktop computer to 3 USB C and 2 USB 3.2 ports. On this basis, make more devices connected to the computer system, such as external hard drives, printers, scanners, tablets, smart phones, USB VR, game controllers, USB , etc. [Intelligent protection] Each interface has an 2A power supply, which is easy to install and does not require an external power supply. The card can be powered directly from the PCIe slot on the motherboard. In addition, each interface has an insurance to provide intelligent protection against over-current and short-circuit to protect your computer equipment. [Super Speed ​​USB 3.2] The USB 3.2 interface of the PCI Express card has a total bandwidth of 20Gbps, while the USB-C port has a 10Gbps sharing speed. The overall transfer speed is 10 times faster than the old version of USB 3.0. This expansion card is a necessity for external hard drives and is very suitable for file transfer. (Note: The actual transmission speed may be limited by the connected device.)