SNANSHI 4 Channel Power Cable Splitter 1 Female to 4 Male for Security CCTV Camera Convenient and cost effective way to power up 4 cameras with 1 power adapter 1 Female to 4 Male DC Power Splitter Cable Total Length: 40cm(17inch) Type: 5.5x2.1mm Outside Diameter: 5.5mm Inside Diameter(male): 2.1mm Pin Diameter(female):2.1mm