Hanvex HSQ1 1 ft 20AWG 2.1mm x 5.5mm DC Power Supply Extension Cable with Switch, for LED Light Strip and Signage Hanvex HSQ1 Power Adapter Extension Cord with Power On/Off Switch Cable Specs - 1ft, 20AWG, UL 2464 (UL Component) Connectors - Female: 2.1mm x 5.5mm jack. Male: 2.1mm x 5.5mm plug. Switch: at the middle. For DC power - Recommended up to 36 volt, max load 3amp or less Main Application - LED strips and lighting system that uses power supply with 2.1mm x 5.5mm plug (Does not work with other size)