Features: brand new and high quality VIA/VL805 is a single-chip USB 3.0 host controller. It enables platforms equipped with PCI Express to communicate with USB high speed (5Gbps) devices. Users can easily connect mass storage devices, printers, scanners, hubs, cameras and any other USB devices used. Fully comply with PCI Express basic specification revision 2.0 Single channel (x1) PCI Express throughput rate up to 2.5Gbps Extending the USB3.0 interface on a PC with a PCI-Express slot Support low speed (1.5Mbps) / full speed (12Mbps) / high speed transmission (480Mbps) / super high speed (5Gbps) Package Includes: 1 x Expansion Card Specifications: Colour: Green Material: PCB+Metal Size: Standard Bus Type: PCI Express Revision 2.0, Single Lane (X1) Main Chipset: VIA/VL805 Media Interface: 4 x External USB3.0 Ports; 1 x 15-pin Sata power connector Transmission rate: low speed (1.5Mbps)/full speed (12Mbps)/high speed (480Mbps)/super speed (5Gbps) Management Features: Hot-swap feature allows you to connect/disconnect devices without powering down the system Operating System: Win 10/Win 8/Win 7/Vista/XP/2000/ME/98SE/Server2003-2008 32/64-bit note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.