Bus Type: 32 Bit PCI Plug & Play External connectors: 2 x Type A USB (Universal Serial Bus) Female Internal connector: 1 x PCB mounted pin header (9 Pin) EHCI based 480 Mbit/sec USB (Universal Serial Bus) 2.0 Hi-Speed compliant OHCI based 12 Mbit/sec USB (Universal Serial Bus) 1.1 compliant Connects USB (Universal Serial Bus) 2.0 or USB (Universal Serial Bus) 1.1 devices to your computer Chipset: Via PTC Resettable fuses for each port Supplied with both standard & low profile brackets Software Compatibility: Windows 2000/XP/ Vista/ Windows 7/8/ Server 2003, 2008 2 Year warranty