USB shared hub Two computers can be exchanged with one key. Convenient and efficient, 2 computers share 2/4 USB devices, plug and play. 2 USB input 2/4 USB output USB devices such as keyboard, mouse, USB printer, scanner, curve plotter, multifunction printer and Bluetooth device can be used together with two computers, which saves money and time. 5V DC power port Devices such as hard disks and digital cameras may need external power to run. When using high-power equipment, please make sure to use the standard 5V adapter for power supply. Switching mode: press the key note:Chargers with a voltage higher than 5 V output are not allowed, which may affect the product. Use step 1 to connect two USB switch input ports to your PC or laptop using USB A-A cables. 2. Connect an external USB device to the output port of the USB switch. 3. Press the switch button to select the input computer. 4. Start the switch through the micro-USB port to access external hard disks, digital cameras and other devices. Power adapter is not included. Function: Two computers share 4 USB devices Standard: USB3.0 Switch method: button Power supply: micro-USB 5V Color: black Material: ABS Package Contents: 1 x Switching Adapter Only the above package content, other products are not included.