Features: USB 3.0 supports transfer rates of up to 5Gbps. The actual transmission speed is limited by the setting of the device connection.Supports 2 downstreams port for all speeds.Hot-swappable, plug and play; Low Energy Consumption.Sufficient and stable power supply to ensure stable operation of equipment.Backwards suitable for USB 2.0 and 1.1 devices; Supports simultaneous operation of multiple USB 3.0/2.0/1.1 devicesSpecifications: Component:PCBProduct interfaces: USB3.0A female (backwards compatibility USB2.0)Product interfaces: PCIE (can be plug into 4X/8X/16X)Product speed: 5GbpsSize:Approx.12cm/2.72inchPackage Includes: 1Pc Expansion Cardnote: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order.2.Due to the differences between different monitors, the picture may not reflect the actual of the item.