TV set) to your Commodore 16. if you want to connect a color monitor (instead of a Here's where you plug in the round end of the cable The Video Socket (the thin black cable) to hook up your computer to a TV set. This is where you plug in one end of the RF cable The RF Jack (Port is the term for the rectangular opening.) Commodore 16 software cartridges plug in here. The Memory Expansion (Cartridge) Port The Back Of Your Computer - SETTING UP YOUR COMPUTER -