4 Ports PCI-E to USB 3.0 HUB PCI Express Expansion Card Adapter 5Gbps for Motherboard You need to install the VLI USB 3.0 driver for your computer first. Interface: Interface: Single-Lane (x1) PCI Express Gen2 Mode Port: 4 external USB 3.0 ports Speed: Data Transfer rate of 1.5 /12/480/5000 Mbps. Low Speed ( 1.5M bps), Full Speed (12Mbps), High Speed (480Mbps), Super Speed (5Gpbs) Power Input: SATA or IDE Power Connector Power output: +/-5V / 900mA (each port) Compatible: USB 1.1 / 2.0 / 3.0 Operating Systems: Windows7/8/10(32/64bit)