New chime pro

Im waiting to take delivery of my Ring equipment and i forgot to ask a important question at purchase time I bought the new chime pro and house is old so the outlets are 2 prong no ground. I need to know if the new chime pro is 2 prong or has the 3rd round ground prong Its not a problem to put in a GFIC ground fault outlet but i dont want to waste the time if the chime has only 2 prongs TYVM Mike