For use with the original Nintendo brand NES console model #NES-001 as well as the newer Nintendo NES Toploader (also called NES 2) model NES-101.
Input: AC 120V 60Hz
Output: DC 9V 850mA, made for use in North America (US, Canada, etc.).
In Europe and Australia, a power converter or voltage regulator may be required.
(2-in-1 works for SNES as well, although only one system at a time.)