5-Port (4+1) High Speed USB 2.0 PCI Controller Card for for PC Windows£» Features£º Data Transfer Rate: Hi-Speed up to 480Mbps Chipset: NEC D720101F1 External Ports: 4x USB 2.0 Internal Ports: 1x USB 2.0 Host Interface: PCI Supported OS: Windows XP, Windows Vista 32/64, Windows 7 32/64,Win 8 and Linux Backwards compatible with USB 1.1 Full-Speed and USB 1.0 Low-Speed Supports device hot swap and wake-up Over current protection Package Content: 1x 5-Port High Speed USB 2.0 PCI Controller Card w/ NEC Chip (4+1) No Retail Packing