The 10-Mbps ABC Manual Switch is a simple way for two PCs to share one Ethernet connection. Or a single PC can switch between two different 10BASE-T networks. You switch quickly and efficiently and never need to plug and unplug cables. With a quick turn of the switch, you get instant access to your 10BASE-T network.The switch is quick and easy to install-just plug your twisted-pair Ethernet cable right into the RJ-45 connections on the back of the switch. And because the switch is nonpowered, you don't even need a nearby power outlet. Once the switch is installed, it provides smooth, reliable switching from the rotary knob on the front. The switch is transparent to all data.