100% brand new and high quality Features: This 4-port USB PCI-E board supports USB 3.0 which can provide fast data transmission speed and is powered by stable and secure PCI-E interface. The PCI-E to USB extender card features a PCI-E X1 bus interface, you can connect it with 4x, 8x, 16x graphics card interface. The PCI-E to USB riser card is easy to install and designed with an LED indicator light so you can easily know the status of work. The PCI-E X1 to USB adapter is easy to use and can be used in many types of computer operating systems. The PCI-E to 4 USB Port Adapter can provide PCI-E USB, so you will have more ports to connect. Specifications: Bus interface: PCI-E x 1. (Compatible with 4x, 8x, 16x graphics card interface) Interface: USB PCI-E x 4 interface Size: approx. 120x67x57mm/4.72x2.64x2.24in Compatible System: Replacement for DOS, Replacement for Linux, Replacement for WinXP / Win7 / Win8 / Win10 Installation instructions: 1. The first step, when you use the adapter card, the computer must be shut down before you can connect the adapter card. 2. In the second step, connect it to the PCI-E slot on the motherboard. Use the USB3.0 data cable adapter to connect the ends of the two USB ports. Connect the power supply. 3. The third step: After completing the above two steps, first leisurely to insert your PCI-E card, start the computer to see if your computer has identified itself in the riser card, if you cannot find the card, please repeat the operation previous. Note: There may be color distortions due to different computer resolutions. There may be little errors due to different manual measurement. Package includes: 1 x USB 3.0 riser card