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. 1x 4×4 USB 3.1 Gen 1 Industrial Hub Switch 2x LIN6-11C1-E11G USB 3.1 Gen 1 Type-B to Type-A Cable 1.2M 2x LIN6-11C1-E12G USB 3.1 Gen 1 Type-B to Type-A Cable 1.8M 1x Remote Port Selector 1x Mounting Kit 1x Terminal Block Adapter Set (an RS-422/RS-485 and a DC terminal block adapter) 1x User Instructions