VIMVIP Black DC 1 Female to 4 Male Power Splitter Cable Y Adapter for CCTV 100% new high quality cable. Plug Diameter: 5.5 mm outer, inner 2.1 mm. Convenient and cost effective way to power up 4 cameras with 1 power adapter. Useful for powering multiple cameras from one central adapter. Package include:1x VIMVIP DC 1 to 4Way Splitter Cable.