El Salvador to United States: No adapter needed
Your El Salvador plugs fit United States's sockets directly -- no adapter needed for the shape. Voltage is compatible (120V vs 120V), so any dual-voltage or matching device is fine either way.
Your El Salvador plugs fit United States's sockets directly -- no adapter needed for the shape. Voltage is compatible (120V vs 120V), so any dual-voltage or matching device is fine either way.