Please check compatibility with your laptop carefully as laptop models do vary. Ensure you have the correct Tip Size, Output Voltage and Amp Rating from your previous charger. The AC power adapter enables you to operate your laptop or charge the battery from electrical power outlets. If you are running your computer on AC power with a battery installed, the adapter charges the battery ( if needed ) and maintains its charge. Tip Size: 3.5mm x 1.35mm Output: 5V 4A UK Three-Pin Plug Power Cord Compatible with the following laptops: Compatible with:Lenovo ADS-25SGP-06 05020E IdeaPad 100S-11IBY 80R200E5US 80R200BWUS, Lenovo IdeaPad Miix 300-10IBY 80NR001WUS. 320-10ICR 80SG001FUS 80SG001GUS Please check compatibility with your laptop carefully as laptop models do vary.