Power and compatibility highlights 5V DC power port for external power Use the standard 5V adapter when operating power USB devices such as external hard disks and digital cameras. 2 USB inputs from two computers and 2 or 4 USB outputs Supports common USB peripherals including keyboard, mouse, USB printer, scanner, curve plotter, multifunction printer, and Bluetooth dongle. Lets two computers share the same set of USB devices, saving equipment and reducing clutter. USB shared hub with onekey switch Quickly switch USB device control between two computers with a single key press. Plug and play for convenient and efficient operation. What it does Enables two computers to share 2 or 4 USB devices through a single hub Reduces the need to duplicate peripherals and simplifies crossmachine workflows. Simple, driver operation Designed for straightforward use with minimal setup, so you can start sharing devices right away. Practical and flexible Suitable for desks, workstations, or labs where two computers are in regular use and common USB peripherals are needed. Compatibility and use cases Works with typical desktop and laptop USB devices, including keyboards, mice, printers, scanners, plotters, multifunction devices, and Bluetooth adapters. Use scenarios 1) Home office or study setup: share a keyboard, mouse, and printer between a desktop and a laptop, switching with a single key press as you move between machines. 2) Creative or design workstation: connect a curve plotter, scanner, and external peripherals to either computer, swapping control as projects switch between devices. 3) Small office or lab: two computers share 2 or 4 USB devices such as printers and USB storage, enabling coordinated workflows without unplugging and replugging cables. Product notes External power may be required for certain power USB devices; connect a standard 5V power adapter to the 5V DC port when using such devices. Setup is plug and play; no complex configuration needed.