You can “split” cat 5 cable and it will work as stated many times above. that cable for anything but 10/100 base T. again uses the extra pairs for the power.

Can a CAT 5 cable be split?

The Networx™ CAT5e Splitter is ideal for splitting a high speed DSL and cable modem and Ethernet port. … Networx™ CAT5e Splitter allows you to run 2 active connections over a single cat5e cable by splitting the pairs into 2 separate connections.

Can you run two devices off one Ethernet?

If you want the most stable and speedy connection, there’s still no beating Ethernet. … To get around that problem, you can use an Ethernet splitter, or rather, an Ethernet switch. These devices can take a singular incoming Ethernet connection and make it accessible to multiple users at the same time.