How to choose AC adapter replacement LENOVO ADL40WD ADL40WC ADL40WL 3620056 Yoga 3 Pro for charger?

If you accidentally broke the  LENOVO ADL40WDA AC Adapter. How do you safely buy the right LENOVO replacement adapter ?
There are some points that you need to know. After know about these point, you will avoid buying the wrong adapter.

•  You need know your LENOVO laptop's model number

The laptop number is the unique number which is located on the bottom or on the side of the LENOVO laptop computer. You can also check the user manual or search the computers built- in help program for the model number.The laptop's system's properties will have the laptop model number.

• You need to find LENOVO ADL40WDA adapter wattage requirements

After find your LENOVO laptop model number,you also need to find out the voltage requirement for the concerned adapter. LENOVO ADL40WDA Adapters have different voltage outputs and using the wrong LENOVO laptop adapter can damage one's computer.
Check the user manual for voltage requirements for the LENOVO laptop. The output voltage is normally listed as s DC voltage. Consumers can also check the product or part numbers for the LENOVO laptop model.

• Find a compatible LENOVO ADL40WDA laptop adapter
  You should look for compatibility lists in descriptions of LENOVO ADL40WDA laptop adapters. Laptop model numbers often look similar, so make sure the model numbers match exactly.