The PCI Express expansion card will allow users to add four USB 3.0 ports to desktop computers via the PCIE (1X) slot. Adding ultra-fast USB 3.0 ports will provide maximum (total) data transfer speed of 5 Gbps for video, audio, photos or files. Enhanced with uasp support: The USB 3.0 PCI Express card adapter uses UASP technology - UASP technology optimizes transfers by allowing multiple commands to be processed simultaneously. 4-Port PCI-E to USB 3.0 Card Built-in self-powered technology provides sufficient power for the USB data device. Experience fast data transfer at any time. Now run a high power consumption device simultaneously in All USB ports. High performance NEC D720201 chipset with more technology. 1 x additional power module. With a built-in SATA power connector, ensure adequate power supply for the USB device. 5 x voltage stable capacitance protect the data and security of the device than ever Compatibility system: Windowsxp / /vista/Win7.Win8.Win10 and above operating system. comes with an extra disk. color: green Material: PC + metal Size: Approx: 12x8.5x7cm Package Contents: 1 x 4 Port USB 3.0 PCI Express (PCI- E) Card 1 x Hard Drive Only the above package content, other products may not are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is +/- 1-3 cm.