A binding post, colored red, which usually indicates a positive terminal.Two insulated, color-coded binding posts at the bottom center of a historical signal generator; modern devices often have bandwidths exceeding the utility of such connectorsAdapter between five-way binding posts and a male BNC connectorUninsulated binding posts on a loudspeaker connected to banana plugsSmall black binding posts of an old loudspeaker driver are visible. These binding posts are not compatible with banana plugs of any size. Instead they were endowed with small solder contacts.