Replace that old and broken AC Adapter on your Genesis 1 gaming system that had been collecting dust. The Genesis 1 AC Adapter is fully compatible with Sega Master System and Genesis 1 gaming systems.
It will do the job but there are better adapters out there.
Makes a bit of a buzz but more importantly i just dont trust it to deliver the power safely for the console.
Do the research and pick up some of the better options (like the triad) or even a ps2 slim adapter which has a voltage regulator built in
Don't get this as it makes a loud humming sound compared which the official Sega brand.
