Features: Super Speed Transfer: Supports USB 3.1 standard, providing up to 10Gb data transfer rate, more than twice as fast as USB3.0 Multi-Port Design: USB 3.1 for simultaneous connection of high-speed USB devices, such as external drive, SSD, etc., to meet your multi-device connectivity needs. PCIE 4X Utilizing the PCIE 4X to connect to your motherboards ensures more stable and higher transfer speeds, making it a powerful expansion card option. Wide compatibility: Backward compatibility with USB3.0 and USB2.0 devices allowing you to seamlessly use wide peripherals. Simple Installation: Simply into the PCIE 4X slot on your motherboards without complicated installation step, suitable for users who are not familiar with hardware installation. Specifications: Size：about 12x8x6.9cm/4.72x3.15x2.72in Support：PCIE 4X USB3.1 Port Backward Compatibility with USB3.0 and USB2.0 Devices Speed:10Gbps Package Includes: 1PC PCIE 4X to USB3.1 Adapter Card note: Due to problemsof lighting effect and shooting there mightbe certain tolerances in product, please understand. Please allow 0-1cm error due to manuals measurement