The PCIE expansion card can be upgraded from the pcie x1 slot inside the main unit to 8 port USB 3.2 ports,providing a multi-device connectivity solution for your computer system. USB expansion card upgrades your desktop computer to 8 port USB 3.2 Gen1 ports via a PCI Express x1 slot.Solve the problem of fewer USB ports inside the computer host, allowing more USB data devices to be connected to your computer system. [SuperSpeed USB 3.2]supporting data transfer rates of up to 5Gbps, overall transfer speed is half that of older versions of USB 2.0,providing greater efficiency for your file transfers.(Note: Actual transfer speeds may be limited by the connected device.) [Wide Compatibility Rang]Suitable for PCI Express x1 to x16 slot, can support PCIe 3.0, PCIe 2.0 computer motherboard,usb 3.0 card port is backward compatible with USB 3.0 and USB 2.0 peripherals. The USB expansion card conforms to the USB 3.0 specification and is compatible with the USB 2.0 and 1.1 specifications.The data transfer rate of USB 3.0 at 5Gbps is 5X that of USB 2.0. Color: Green Material: PCB+Metal Package Contents: 1 * PCI-E Expansion Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.