The US3344I is a 4-port USB3.1 Gen1 Industrial Switch that enables 4 computers to share the use USB3.1 Gen1 devices, such as keyboard, mouse and other peripheral devices. The peripheral focus can be given to a computer manually by using pushbutton on the switch. Support port selection via remote controller or RS-422/RS-485 link through 5-pin terminal block. Support DC 9-24V power input by terminal block. Support Battery Charging V1.2 and over current protection.