These Adapters are not Power Converters. These Adapters must fit your electronics precisely in order to work. Some adapters are for older model electronics, but are still in high demand. These Adapters can be used as replacements for original adapters, but note that not all of them are made for the USA. Most of the Adapters we sell operate on foreign 220-240 Voltage, which mean they will only operate in foreign countries overseas.