If you need a Backup Lenovo Thinkpad S540 Laptop ac adapter for use at office or you just need a new replacement power supply for Lenovo Thinkpad S540 pc because you have just lost it,then this charger is really you are looking for.This High quality Lenovo Thinkpad S540 Ac Adapter 65w 20V 3.25A AC Adapter is 100% compatible with original Lenovo Thinkpad AC Power Adapter.UKcharger.co.uk webStore will be your one-stop shop for Notebook AC Adapters,here you can find an enormous selection of laptop power chargers at low cost,quick response and professional support.All of the Laptop Chargers you will find from us are Brand New OEM Equivalent and guaranteed to meet or exceed original Lenovo Thinkpad AC Adapter specifications.