Overview:PCI Express throughput rates up to 3 Gbps Supports simultaneous operation of multiple USB (Universal Serial Bus) 3.0, 2.0, 1.1 devices Built-in 4-pin power connector for receiving extra power supply from system Supports Windows 2000, XP, Vista, & Win 7 OS system Comes with a software CDSpecification: Weight Approx:35.2g Size Approx:8.3 x 12 x 1.8