SIIG DP 2-Port USB 3.0 PCIe i/e Card: * Add 1 external and 1 internal) USB 3.0 ports to your PCIe-enabled desktop PC * Works with high-bandwidth USB 3.0 devices * Supports data rates up to 5Gbps * Backward compatible with USB 2.0/1.1 devices * Dual profile design to work with full height and low profile chassis with included brackets * Supports per port over-current protection