Nuby SE-14 adapter made to power the Sega Game Gear products and we understand that it will also work with Nintendo. Provides 10VDC at 550 mA from standard 120VAC, 60HZ. Model 48-10-550D. Most 12VDC devices work fine with 10VDC. Has coaxial plug, 5mm OD and 1.5mm ID. 10 foot cord. Here's an inexpensive DC source at high current. Unused.