hgiljr

Thanks. I see two boards as show below. Which one should I find the manual for?

Hello all. Newbie here. I was given an arcade machine with over 60 games built into it. No idea the year built or anything along those lines. It works and enjoying it very much, just curious if there is a way to turn off the audio/music when not in use? Not a fan of always having to be turning it off and on since it is in my home office and unable to attend meetings with it on. I do see a rocker switch when I open the access panel in the front but not sure what it does. I know the push button switch gives me credits to play but not sure about the rocker switch. Any guidance or info greatly appreciated. Thank you