Hanvex HDCQ6W 6ft 20AWG 2.1mm x 5.5mm DC Plug Extension Cable for Power Adapter, White, For LED, CCTV, Car, Monitors, and more Hanvex 2.1mm x 5.5mm DC Power Supply Extension Cord, Male to Female Cable Specs - 6ft, 20AWG, UL 2464 (UL Component) Connectors - Female: 2.1mm x 5.5mm jack. Male: 2.1mm x 5.5mm plug. Recommended for DC 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.