Feature:1. Expansion Capabilities: Add two USB 3.1 Gen 2 type C (10 Gbps) ports to your new PC or old PCIe equipped desktop computer.2. Fast Transfer Speed: The expansion card for Asmedia chipset is equipped with 10Gbps bandwidth, which guarantees fast data transfer speed, the true speed of a single port USB3.1.3. Compatible Slots: PCI express 4X to USB 3.1 Gen 2 expansion card compatible with PCIe x4, PCIe x8, PCIe x16, not PCIe x1, PCIe x2, PCI.4. Wide Compatibility: Type C expansion card supports for Windows,for Linux operating systems, is widely compatible, and is backward compatible with USB 3.0 and USB 2.0 devices.5. PCI E to USB3.1: PCI expansion card can expand two more ports, USB C interface only contains data signal, not video signal.Specification:Item Type: PCI Express 4X to USB 3.1 Gen 2 Expansion CardProduct Material: PCBChip Used:For Asmedia ASM1142,3142PCIE: X4 (support X4 X8 X16 Slot, Cannot Be Used for X1 Slot)USB C: 2 Ports USB C 3.1, Backward Compatible with USB C3.0, USB C2.0 and USB C1.1Transmission Rate: Support 10G,5G,480Mbps,12Mbps,1.5 Mbps Data Transmission Rate.Package List:1 x PCI Express 4X to USB 3.1 Gen 2 Expansion Card1 x Metal Baffle1 x Screw