Features: 1.4xUSB3.0 Ports: 4 high speed USB 3.0 ports will provide a maximum data transfer speed of 5Gbps for video, photos or files. 2.PCI Express X1 Interface: PCI Express x1 interface (also for PCIE x1, x4, x8, x16 slots). Easy to use. Power is supplied through the 4 pin power connector. 3.Supported Systems: for Windows 10 8 8.1 7 Vista XP 2000, for Windows Server 2012 2008 2003, for OS X, for Linux and other mainstream systems. USB3.0 compatible, backward compatible with USB20 and USB1.1 4.High Speed: High quality voltage regulator components, built in A level voltage regulator components, strengthen the protection of power supply voltage stability, and ensure high speed and stable data transmission. 5.Uses: It is an external storage device ideal for MP3 players, external DVD recorders, card readers, digital cameras, webcams, and all other USB devices. specification:Item Type: PCIE to USB3.0 Expansion Card Material: PCB Chip: for VL805 Port Number: 4xUSB3.0 Usb3.0 Data Transfer Rate: Up to 5Gbps Applicable Models: Conventional Desktop Interface: PCI Express 1 x Slot Applies To: PCI E X1, X4, X8, X16 Slots Supported Systems: for Windows 10 8 8.1 7 Vista XP 2000, for Windows Server 2012 2008 2003, for OS X, for Linux and Other Mainstream Systems Compatible: USB3.0 Compatible, Backward Compatible with USB20 and USB1.1 Ports: 4 Ports External USB3.0, 10 Times Faster Than USB2 PackageList:1 x PCIEtoUSB3.0ExpansionCard