Darktop® Replacement Laptop AC Adapter Charger Power Supply for Advent E-system EI-System 20V 3.25A 1201 1211 1212 3101 3102 3103 3105 3083 3085 3086 3087 4115c 5302 5303 5431 5611 5411 l and Advent Roma 1000 1001 2001 3001 4001 aptops with free UK power