PCIe to USB Extension CardThe PCIe extension card extends 7 USB 3.0 Type-A ports from a PCIe 3.0 slot, upward compatible with x1, x4, x8 and x16 slot High-Speed Transmission RateThree USB Type-A ports share 5Gbps bandwidth together, and the rest four ports share another 5Gbps bandwidth, with total bandwidth up to 10Gbps. Each port supports transmitting data at a rate up to 5Gbps when used solely. Note:The actual transmission speed is limited by the setting of the device connected Widely CompatibilityThe card is compatible with Windows 7/8/10/11 (32/64 bit) and Mac OS 10.8.2 and above. The card only requires installing a driver which you can download from our CD driver, when operating on Windows 7. Note: Windows XP,/Vista/7, Server,requires driver installation, Windows 10/11 and Mac OS and Linux don't need drivers Stable to UseThe PCIe card is simple to install and draws power directly from the PCIe interface.The USB Type-A ports offer power up to 5W and the USB