Description

A cable that functions as a wired display link (using wires and connectors [similar to immersive engineerings energy system] )

you could have a source connector(wired source block), a target connector(wired target block), and a relay connector (just to extend maximum reach) when you right click on a connector with a data wire in hand it attaches to the connector, when you click on another connector within "X" distance it connects, forming a wired display link

Why:
I think Cables look better than wireless "magic" blocks