The AF-C320 USB3.0 expansion card can achieve a transfer speed 10 times faster than USB2.0, up to 5Gb/s, greatly improving the stability and energy efficiency of the transfer. In terms of data transfer, the new USB3.0 interface also provides a considerable amount of bandwidth, allowing your desktop computer to be upgraded immediately, simply and efficiently. The AF-C320 expansion card is equipped with a USB3.0 super-speed chip; the two USB3.0 interfaces are combined with PCIe 2.0 so that it is compatible with the Intel xHCI – Rev 0.96 specification. The AF-C320 expansion card can be directly connected to the motherboard PCI - x1 slot or use a larger PCIe slot (connection speed is twice as fast).