Sturdy black ABS case provides durability and resistance to dropping and wear. No external power supply required: the device operates normally with the connected printer and USB ports without the need for an external power source. Two computers share a printer: seamless switching between PCs without repeatedly plugging and unplugging cables, helping protect equipment and reduce office costs. Shared USB devices: supports sharing USB devices between two computers to improve office efficiency. Compatibility and versatility: suitable for a variety of devices, enabling two computers to access USB peripherals together. Use scenarios Small office with two computers and a single printer: employees print from either PC without swapping cables, reducing downtime and cable clutter. Home office with desktop and laptop: print from either machine and use common USB devices (such as USB drives or peripherals) without reconnecting hardware. IT or temporary workstations: quickly set up shared access to a printer and USB devices for team members without extra power adapters or complex configuration.