How to choose AC adapter replacement ASUS XA1202YH ADP-90YD B PA-1900-42 EXA1202YH BX51V B43V for charger?

If you accidentally broke the  ASUS XA1202YH AC Adapter. How do you safely buy the right ASUS 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 ASUS laptop's model number

The laptop number is the unique number which is located on the bottom or on the side of the ASUS 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 ASUS XA1202YH adapter wattage requirements

After find your ASUS laptop model number,you also need to find out the voltage requirement for the concerned adapter. ASUS XA1202YH Adapters have different voltage outputs and using the wrong ASUS laptop adapter can damage one's computer.
Check the user manual for voltage requirements for the ASUS laptop. The output voltage is normally listed as s DC voltage. Consumers can also check the product or part numbers for the ASUS laptop model.

• Find a compatible ASUS XA1202YH laptop adapter
  You should look for compatibility lists in descriptions of ASUS XA1202YH laptop adapters. Laptop model numbers often look similar, so make sure the model numbers match exactly.