Sega Genesis Model 1 AC Adapter (MK-1602)

9 V DC barrel wall adapter

Verified November 2026

Which one do you have?

You need: MK-1602: 9 V center negative

You need: 10 V variant reported, same other ratings

Cheaper aftermarket part

Genesis Model 1 AC adapter

9V DC, 1.2A min, 5.5×2.1 mm, center negative

A Model 1 replacement is cheap, but the Sega family has opposite polarities, so buy one sold for this console.

Check first: Confirm it's a Model 1 and the adapter is DC, center negative. Model 2 and 3 use opposite polarity.

Exact part

MK-1602

Plugging in a Genesis 2 adapter; it has opposite polarity and can damage the console.