APG Cash Drawer Electronically-Activated Vasario Cash Drawer. Model 320/420 Interface. The MultiPRO Interface has been designed to connect APG cash drawers to Point of Sale receipt printers or terminals using interchangeable and detachable cables. A drawer open/close switch included in the cash drawer is used to report status. The cash drawer connector is an RJ45 (8-pole) receptacle either in the base or the divider. The cash drawer comes with 2 keys and MultiPRO Interface Product Guide. Condition is new, still in original plastic wrap. Original box is not available.