Hello! I have a Numatic NVQ 380-b22..I am sorry for the simple language, I am not a technical guy. I bought this years ago brand new and just opened it now. - Long story- Beside the power switch there is an outlet for a two pronged plug, like you'd plug into an electrical outlet, not two skinny pins) and it says "for use with a motorized brush".. Where on earth can I find one or one that will work. I drew an arrow in the attached picture, the plug has two small inserts, not a big one and small one)

