SIIG DP USB 3.0 4-Port PCIe i/e-Value Adapter Card (JU-P40611-S1) Add four (3 external & 1 internal) SuperSpeed USB 3.0 ports to your PCIe-enabled desktop PC Works with high-bandwidth USB 3.0 devices, such as external hard disks, high resolution webcam, video surveillance cameras, digital video cameras, multi-channel audio and more Supports data rate up to 5Gb/s and backward compatible with USB 2.0/1.1 devices