his cable is primarily used to connect cameras to your system. It provides a Power Circuit, an Audio Circuit and a Video Circuit. The Power Circuit is configured with standard 12/24V DC male & female connectors. The Audio & Video Circuits are configured with RCA male connectors at both ends. The RCA jacks work as is for most audio connections. In most cases, the video circuit will require the use of an RCA Female to BNC Female Connector on both ends of the cable. To join two of these cables together for a longer run 2 RCA Female to RCA Female Connectors are required.