SYBA High Speed USB 2.0 2+1 Ports with 1x Internal Header PCI Card, VIA Chipset Model SD-VIA-2UH Type: PCI to USB Card External USB Ports: 2x USB Ports Internal USB Ports: 1x USB Port Standard: USB 2.0 Data Transfer Rate: 480/12/1.5 Mbps Operating Systems Supported: Windows 98SE, ME, 2000, Server 2003, XP & Vista operating system Weight: 1 Package Contents: USB 2.0 card CD Driver