Mediasonic 2 Ports USB 3.1 GEN II (10Gbps) PCI Express Card 2 x USB Type A Port (USB 3.1 2A)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>External 2 Ports USB 3.1 (2 x USB Type A Port)， Support All USB 3.1， USB 3.0， USB 2.0， and USB 1.1 Devices，</li><li>USB 3.1 SuperSpeed+ support maximum transfer rate at 10.0 Gbps per port， backward compatible SuperSpped 5.0Gbps， HighSpeed 480Mbps， FullSpeed 12Mbps， and LowSpeed 1.5Mbps.</li><li>PCI Express 2.0 / 3.0 x4 Lane Gen2 Interface， Compliant with Intel Extensible Host Controller Interface (xHCI) Specification 1.1</li><li>Compliant with PCI Express Specification 1.0， 2.0 and 3.0， Compliant with Low Profile PCIe Form Factor， ready for all size of PC cases</li><li>5V USB bus power directly from PC power supply via 15 Pin SATA to 4 Pin Molex Power Cable， Suggest using In-Box driver on Windows 8.1 / 8 for USB Attached SCSI (UAS) performance</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51bk8nmtkOL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41-LPR14apL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51ovlR9SVtL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51Jcnb0iMpL.jpg" noproxy>