Laptop computers come with Laptop AC adapters designed specifically for the system. The Power Adapter may operate with other systems as well, but use of an incorrect power source can damage the laptop hardware.

Compatibility Each AC Adapter has values for its input and output in terms of voltage and polarity. For the adapter to be compatible with another system, these values must match the power needs of that computer. Reference the system's documentation or its original Power Adapter for specific information on power requirements.

Components Most Laptop Adapters come in two parts: a cord that connects to a wall socket and the adapter that connects to the computer. These two components also must be electrically compatible with each other to supply the correct amount of power.

Ports Different manufacturers use different ports and hardware configurations with their Laptop Adapters. Even if an AC Adapter is electrically compatible with another system, it may not physically connect due to incompatible port configuration.