5V DC power port External power can be required for power USB devices such as hard disks and digital cameras. When using these devices, connect a standard 5V adapter to ensure stable operation. USB shared hub with onekey switch Easily switch control between two computers using a single key. This design lets two PCs share USB peripherals in a convenient and efficient way, with plugandplay setup for quick use. 2 USB input ports and 2/4 USB output ports Supports common USB devices such as keyboard, mouse, USB printer, scanner, curve/plotter, multifunction printer, and Bluetooth dongles. Two computers can access these devices without rearranging cables, saving both time and money. Key benefits and features Simplified crossPC sharing: seamless access to common USB peripherals from two computers. External power ready: accommodates power devices with a 5V power supply. Plugandplay operation: no complex setup or driver installation required. Flexible port configuration: supports 2 input ports and 2 or 4 output ports for versatile device connections. Practical compatibility: designed to work with a wide range of USB devices commonly used in home, office, and lab environments. Use scenarios Small office or home office: share a single printer and scanner between two computers without swapping cables. Creative workstation: run keyboard, mouse, and USB peripherals on two PCs to streamline workflows across devices. IT testing or multicomputer setups: quickly switch peripherals between machines during testing or collaboration, reducing downtime.