Features: brand new and high quality VIA/VL805 is a single-chip USB 3.0 host controller. It enables platforms equipped with PCI for 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 for comply with PCI for Express basic specification revision 2.0 Single channel (x1) PCI for 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) Specifications: Colour: Green Material: PCB+Metal Size: Standard Bus Type: PCI for 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 Package Includes: 1 x Expansion Card 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!