The VideoSecu ACBVA50 is a brand new 50 feet CCTV security extension cable connects power supply and digital video recorder to security cameras directly. It can be used with Closed Circuit Television (CCTV) applications and security camera components. The power connector for this cable is 2.1 mm positive. It works for DC power only. And there is pre-made BNC output for video and RCA output for audio. It also comes with BNC/RCA adaptors in package. This cable is made of pure copper and of good quality.