Features: brand new and high quality This PCI-E to USB expansion board supports one PCI-E x1, x4, x8 and x16 slot. This PCI-E extender board is designed with 2 USB 3.0 ports which can help solve the problem of missing USB port. This PCI-E to USB adapter card supports USB 3.0, which means fast data transmission speed. This PCI-E to USB extender has wide compatibility and is convenient to install and use. This PCI-E to USB adapter is reliable to use and can replace your old or damaged adapter card. Specifications: Interface: PCI-E for USB 3.0, 19 pins USB port: 2 x USB 3.0 Speed: 5Gbps Connector type: PCI-E x1, x4, x8, x16 Compatible OS: for Windows XP 32/64, for Windows 7 32/64, for Windows 8, for Windows 8.1, for Windows 10 Note: There may be color distortions due to different computer resolutions. There may be slight errors due to different manual measurement. Package includes: 1 x PCI-E to USB expansion card