Aten 4x4 USB 3.1 Gen 1 Industrial Grade Hub Switch, up to 5Gbps data throughput, supports serial control RS422/RS485, Power adapter or DC terminal block power supported â– Enables 4 computers to share 4 USB 3.1 Gen1 devices â– Support port selection via remote controller or RS-422/RS-485 link through 5-pin terminal block â– Support DC 9-24V power input by terminal block â– Support Battery Charging V1.2 and over current protection Package Contents: 1x 4x4 USB 3.1 Gen 1 Industrial Hub Switch 2x USB 3.1 Gen 1 Type-B to Type-A Cable 1.2M 2x 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