In this guide, you will learn how to add, upgrading SSD on Asus G771, I will remove the service cover and remove and replace SSD.
Remove one screw securing the service.
Pry up and remove the cover.
Remove two screws securing the SSD cover
Remove the cover, you can access the SSD.
Remove the screw securing the SSD and takes it out from SSD slot.
Now you can insert your bigger capacity SSD.
Note: the SSD slot is M.2 PCI-Express
All the images are come from asus.com