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 Sony 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:6.5mm X 4.4mm * Tip colour may vary between black and yellow. This has been referred to as 6.0mm x 4.4mm but the correct measurement is indeed 6.5mm X 4.4mm.Output: 16V 4AUK Three-Pin Plug Power CordPlease check compatibility with your laptop carefully as laptop models do vary.