[Maximum extension, USB interfaces] your Computer to 7 ports USB3.0--2 Port Type C and 5 ports Type A, You can connect keyboard, mouse, external hard drives, CD/DVD drives, webcams,usb printers, scanners, game controllers,USB VR, digital cameras, etc. [ and efficiency] supports transfer rates of up to 5Gbps copying HD videos, music, photos,data files between USB devices and the computer at blazing fast speeds.Note:The actual transmission speed is limited by the setting of the device connected. [Widely compatibility] USB3.0 Backwards compatible with USB 2.0 and 1.1 devices; Comply with PCI-e 3.0 PCIe 2.0 and PCIe 1.0 motherboards, Fits PCI x1, x4, x8 or x16 socket . Supports /2008 Server/7/8/10,and 0s (10.8.2 above) . Note: Windows XP,/Vista/7, Server,requires driver installation, and OS 10.8.2 above ' need drivers. [Easy to install]Shut down the PC, unplug the power supply,remove the PC case, the card in pcie socket and tighten the screws,and the PC , turn on the PC and install the driver. quick and easy installation, a for connecting to and using USB 3.0 devices on your standard desktop PC. Colour: black Material: PC + metal Package Contents: 1 x USB3.0 PCI-E expansion card 1 x CD drive 2 x mounting screws 1 x Manual Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.