Type: PCI Express to USB Card External USB Ports: 3x USB Ports Internal USB Ports: 1x USB Port Internal Ports: 1 x SATA Standard: USB 3.0 Data Transfer Rate: Up to 5.0 Gbps Operating Systems Supported: Windows XP(32/64-bit)/ Server 2003(32/64-bit)/ Vista(32/64-bit)/ 7(32/64-bit)/ Server 2008 R2 Dimensions: 0.87" x 3.54" x 2.76"