Output current: When the external power supply conditions are , the output current of four USB channels can reach 5A, and the output current of single USB channel can reach 5A. External power supply voltage and current: In the case of output 5V5A: 12V input 2.5A, 24V input 1.35A (laboratory data),External power supply interface: -USB (5V), DC5.5 x 2.5 (9V~24V), XH2.54 interface (9V~24V) Protection circuit: overcurrent protection, short circuit protection, power reverse connection protection,Product size: 68 x 60 x 18.5mm Colour: Black Material: PCB The expansion efficiency of four ports is doubled at the same time. When used as a motherboard/ USB docking station, external devices such as keyboards, mice, cameras, and U disks can be connected at the same time. When used as a robot/car extension, it can be connected to external devices such as radar, Bluetooth receiver, and depth camera at the same time. In addition to the USB-A standard data interface power supply, this product also supports 5V (-USB), 9~24V (DC interface/XH2.54 socket) wide-voltage external power supply, which can high-power peripherals and multiple devices at the same time. The power supply and transmission are stable under consumption, and each USB3.0 interface can output sufficient current. Support ROS robots/, /Rising Pi/ series motherboards, PC computers, other motherboards, industrial computers, etc. The structural holes support the stacking installation of 4B/3B+/3B and Rising X3 Pi. Chip model: VL817 Transmission speed: 5Gbps (theoretical) Data cable length: 30cm Output interface: 4 x USB3.0 interface Interface compatibility: USB3.0 and backward compatible with USB2.0 and USB1.1 Compatible system: Win7/8/10, Linux, MacOS, Working voltage: 5V Working current: 90mA Package Contents: 1 x Expansion Board 1 x Data Cable 1 x Flex Cable 5 x Studs 5 x Screw 5 x Nuts 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.