United States to El Salvador: No adapter needed
Your United States plugs fit El Salvador'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 United States plugs fit El Salvador'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.