Adapter ACOPOWER 150Wh Solar Power Generator ASIN B01N80PJVK from your solar panel by this MC-4 adapter cable. One end is MC-4(common solar panel connector), the other end is DC 3.5mm x 1.35mm (Outer diameter 3.5mm,inner diameter 1.35mm). The cable length is 37 inches/1M not including the MC-4 connector & DC connector. The entire cable is 41 inches. Universal for all the Solar panel with MC-4 connector.? easy to disassemble and install without tools 1 Year Warranty from the purchase date. Free and technical support