For U.S. and Canadian travelers, electrical converters aren't necessary because Mexico operates on the 60-cycle, 120-volt system; however, many Mexican outlets have not been updated to accommodate three-prong and polarized plugs (those with one larger prong), so to be safe bring an adapter.
Blackouts and brownouts—often lasting an hour or so—are not unheard of, particularly during the rainy season, so bring a surge protector.
Consider making a small investment in a universal adapter, which has several types of plugs in one lightweight, compact unit.
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