The PCIE expansion card can be upgraded from the pcie slot inside the main unit to 8 USB 3.2 ports,providing a multi-device connectivity solution for your computer system. USB expansion card upgrades your desktop computer to 8USB 3.2ports (2x USB C,5x USB A) via a PCI Express x1 slot.Solve the problem of fewer USB ports inside the computer host, allowing more USB data devices to be connected to your computer system. [SuperSpeed USB 3.2]supporting data fer rates of up to 5Gbps, overall fer speed is half that of older versions of USB 2.0,providing greater efficiency for your file fers.(Note: Actual fer speeds may be limited by the connected device.) [Easy to Use-Safe]Each port supports a maximum power of 5W (5V/1A), the pcie usb 3.0 card can be powered from the PCI-E slot, no external power supply is required,and the installation is easy. In addition, each interface has insurance, with over-current and short-circuit intelligent protection to protect your computer equipment. [Wide Compatibility Rang]Compatible with 7/8/10/ and OS 10.8.2 , suitable for PCI Express x1 to x16 slot, can support PCIe 3.0, PCIe 2.0 computer motherboard,usb 3.0 card port is backward compatible with USB 3.0 and USB 2.0 peripherals. ( Vista/XP/7 systems require drivers to be installed from the CD.) The card provide 6 USB Type-A and 2X USB Type-C ports. No need for additional power supply, built-in self-powered technology. Support UASP,speed 70% faster than traditional USB 3.0. Compatible with pcie x1 to x16 slot. The high-performance chipset Fresco Logic 1100 provides a stable and reliable USB 3.0 connection with the computer. The USB expansion card conforms to the USB 3.0 specification and is compatible with the USB 2.0 and 1.1 specifications.The data fer rate of USB 3.0 at 5Gbps is 5X that of USB 2.0. System 1. XP/7/Vista/Server.(CD drivers need to be installed) 2. 8 / 8.1 / 10/ OS 10.8.2 .( No driver installation is