Universal laptop Power Adapter 90w AC Charger for HP IBM 90W Universal AC Adapter for Laptop Instruction:1. Please make sure the output voltage your device uses is within 15V to 24V. You... 2. Find the correct connector by trying to plug it in the device. We recommend plugging the... 3. Select the correct voltage (determined by your laptop) just by simply moving the voltage... Item Includes: AC Adapter, plug-in connectors and Power Cord(US Version) .