At the moment only the Scart cable is shown here.

Connection diagrams of the old style DIN keyboard connector and the newer PS/2 keyboard and mouse connectors.

Some serial connectors, including a so called Null Modem Cable.

Standard UTP ethernet cables are always too short, or their plugs won't fit through a pipe or hole you've drilled. Therefore you'll have to crimp the RJ-45 connectors to the cable yourself. Here's how to do that.