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 4x4 USB 3.1 Gen 1 Industrial Hub Switch2x LIN6-11C1-E11G USB 3.1 Gen 1 Type-B to Type-A Cable 1.2M2x LIN6-11C1-E12G USB 3.1 Gen 1 Type-B to Type-A Cable 1.8M1x Remote Port Selector1x Mounting Kit1x Terminal Block Adapter Set (an RS-422/RS-485 and a DC terminal block adapter)1x User Instructions