The wide range of DC outputs available, together with the high current output and extensive range of power tips should mean this adaptor will work with most laptops on the market. The lead from the cigarette lighter socket to the adaptor is approximately 25cm in length, whilst the lead from the adaptor to the laptop measures approximately 1.8 metres. The power tips are designed in such a way that they can only be inserted one way round, providing a centre positive polarity - please check this matches the polarity required by your laptop before use, and if any doubt, seek professional guidance.