SIIG USB 3.0 4-Port PCIe i/e Model JU-P40212-S1 Type: PCI Express to USB Card External USB Ports: 3x USB Ports Internal USB Ports: 1x USB Port Data Transfer Rate: Up to 5.0 Gbps Operating Systems Supported: Windows 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) Specifications: 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 Powered by Texas Instruments (TI) chipset for maximum compatibility Supports data transfer rate up to 5Gb/s and backward compatible with USB 2.0/1.1 devices Dual profile design to work with full height and low profile chassis with included brackets Compliant with Universal Serial Bus 3.0 Specification Compliant with PCI Express Base Specification, Revision 2.1 Supports per port over-current pr...