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 transfer 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 required.) Note: 1. Not compatible with old PCI. 2. Not equipped with Low-profile bracket.Not suitable for small computer and server chassis,only for standard or larger large chassis.The usb 3.0 card installed on the board is only suitable for PC host controller reserved ports with width more than 4.72 inches & height more than 0.51 inches. 3. DP, , VGA display conversion function is not supported.( Displays) Colour: black Material: plastic + metal Package Contents: 2 * PCIE Adapter 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. [SuperSpeed USB 3.2]supporting data transfer rates of up to 5Gbps, overall transfer speed is half that of older versions of USB 2.0,providing greater efficiency for your file transfers.(Note: Actual transfer speeds may be limited by the connected device.) 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. [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.)