1. This is a PCI-Express card 8 * High-speed USB 3.0 interface expands when you need to use multiple external USB products at the same time, this Express card will be the best choice. 2. ConformsTo PCI Express standard version 3.0. 3. USB 3.0 interface Transmission rate could reach 5Gbps, downward compatible with USB 2.0 / 1.1. 4. A USB device to be connected simultaneously 7port. 5. Supports Windows 7/8/10/11. Interface specification: USB3.2 Gen1 *8 Interface rate: 5Gbps Interface speed: about 390MB/S Bus specification: PCI-E 3.0x2 Bus rate: 16Gbps Installation conditions: free PCI-E X4.X8,X16, slot Note:Due to different production batches, there are differences in printing/appearance, which does not affect use. Colour:Green Material:PCB+Metal Package Contents: 1 * USB 3.0 Expansion Card