DC 2.1 mm 12v to 12 Pin Hirose Cable. Powers Zoom Rocker on Canon Fujinon Nikon B4 Lenses w/ Panasonic AF100 GH1 GH2 GH3 Olympus PEN E-P3 BlackMagic Design Cinema 2.1 mm 12v Plug to Hirose 12 Pin Female Power Cable specifically designed to power 2/3" video lenses (B4) mounted on Panasonic AF100, GH1, or GH2 cameras. Power 1/3" 1/2" 2/3" Fujinon Nikon Canon Angenieux Schneider lens Servo having a cable with a Hirose 12 pin Male end. Designed for use with 12v batteries with 2.1mm socket. Provides power to the Zoom Servo Functions including (Fujinon) Quick Zoom, Cruise Zoom & Memory Functions.