SIIG 2-Port Dual Profile PCIe Adapter with SuperSpeed USB 3.0 (JU-P20612-S1) Adds two USB 3.0 ports to your PCIe-enabled desktop PC -- enhancing existing systems with the latest USB 3.0 technology Works with high-bandwidth USB 3.0 devices, such as external hard disks, high resolution webcams, video surveillance cameras, digital video cameras, multi-channel audio and more Dual profile design to work with full height and low profile chassis with included bracket Adds two USB 3.0 ports to your PCIe-enabled desktop PC -- enhancing existing systems with the latest USB 3.0 technology Works with high-bandwidth USB 3.0 devices, such as external hard disks, high resolution webcams, video surveillance cameras, digital video cameras, multi-channel audio and more Dual profile design to work with full height and low profile chassis with included bracket Supports UASP function (with Windows 8 native USB 3.0 Host driver only)