MANHATTAN 171557 Hi-Speed USB PCI Card Type: USB PCI Card External USB Ports: 4 external USB 2.0 Standard-A ports Internal USB Ports: 1 (shared) internal USB 2.0 Standard-A port Data Transfer Rate: Up to 480 Mbps Operating Systems Supported: Windows XP/Server 2003/Vista/7/8 Dimensions: 0.90 x 4.75 x 5.10 (H x W x D) Weight: 0.4 Package Contents: Hi-Speed USB PCI Card Instructions