Hanvex HDCQ50 50ft 2.1mm x 5.5mm DC Plug Power Adapter Extension Cable, 20AWG Cord for 12V CCTV Wireless IP Camera, LED, Car, more Hanvex 2.1mm x 5.5mm DC Plug Extension Cord, Male to Female Cable Specs - 50ft, 20AWG, UL 2468 (UL Component) Connectors - Female: 2.1mm x 5.5mm jack. Male: 2.1mm x 5.5mm barrel plug. Spring locked tip for solid connection. For DC power - Recommended up to 36 volt, max load 3 amp or less This cable will only work with power adapter with 2.1mm x 5.5mm plug and not other sizes.