Description: Support for hot plugging of USB devices Support simultaneous operation of multiple USB 3.1, 3.0, USB 2.0 and USB 1.1 devices Support USB data transfer rate of 10G / 5G / 480/12 / 1.5 Mbps Expanded 2 standard USB3.1 full-speed A-type interfaces Each USB port provides + 5VDC / 900 mA output power for USB devices Built in current protection on each USB port Support device USB keyboard or mouse remote wake-up function Support control, batch, stream, interrupt, synchronous transfer type Support operating system: win7/win8/8.1/win10/Linux2.6.31 Specification: Using the chip: ASM1142 PCI-E: X4 (supports X4 X8 X16 slot, cannot be used in X1 slot) USB: 2-port USB3.1 Backward compatible with USB3.0, USB2.0 and USB1.1 Two baffles Length: 12cm, 8cm Riser card size: 60*77*10mm Package Includes: 1Pcs riser card 1Pcs S136 board 1Pcs S131 baffle 1Pcs CD-ROM with driver