Quantity: (2-Pack) Size: Length Width: (3.8cm x 1.2cm) Color: (Black) Connectors 1: 5.5mm x 2.1mm female DC power jack, Connectors 2: 5.5mm x 2.1mm female DC power jack, (Diameter outside: 5.5 mm, Inner diameter: 2.1mm) Product function: Can be used to connect a DC power extension cable to an existing power supply without cutting or splicing wires. Easy to install. Devices with DC connector: 2.1 x 5.5mm DC power jack adapter for CCTV security surveillance camera, LED light, router, mini fan, cable modem, hub, photo player, SCM development, electronic dog, access control, car charger, audio-video equipment, AV equipment, notebook,. Etc Note: Please make sure the DC output and tip size of the power adapter are consistent before bidding. Welcome to meet