100% new high quality cable. This power splitter cable is suitable for CCTV analog security cameras. Plug Diameter: 5.5 mm outer, inner 2.1 mm. Convenient and cost effective way to power up 8 cameras with 1 power adapter. Useful for powering multiple cameras from one central adapter. Guaranteed for 1-year warranty & Free life-time Tech Support. If you have any product problems, please contact us anytime.