Solved! How can I upgrade my Laptop to it's maximum ram level?

[Souvik364]

I have Asus Vivobook 14 X415JA-EK503T. It has 4GB non removable RAM in one slot & there is an Extra RAM Slot. Can I add 8GB Stick in that slot?

 

[COLGeek]

Yes, see here, for example:

https://www.crucial.com/compatible-upgrade-for/asus/vivobook-14-x412da (very similar model in same family, recommendations should work for your system as well)