SUNIX IT USB 3.1 Enhanced SuperSpeed Dual ports PCI Express Host Card with Type-A Receptacle (USB2312) PCI Express Base Specification Revision 2.0 dual-lane (x2). Compliant with Universal Serial Bus 3.1 specification Gen2. Supports simultaneous operation of multiple USB 3.1, 3.0, USB 2.0 and USB 1.1 devices. Supports USB data transfer rate of 10G/5G/480/12/1.5 Mbps. Driver supports for Microsoft Windows 7, 8.x and 10 operation systems.