The DC laptop power adapter's circuitry adjusts the output power to the full operating requirement for this series of laptops. The Lind DC/DC adapter for the laptop listed above will operate these laptops and recharge it's battery - Adapters are housed in rugged ABS cases and sealed for durability. - Output short circuit protection. - Safety current limiting. - Internal temperature limit cut-off. circuitry. - Automatic reset after cut-off conditions return to normal. - Under-voltage and over-voltage protection.