$500 - 12"-13" Laptop that I can put an SSD into or has an SSD already

Greetings,

My mother is looking for an extremely small and lightweight laptop that she can do normal browsing and Word Processing (with MS Office).

She likes my Ideapad 720s AMD 13", so something like that would be great.

Preferences:

12-13" Windows OS Around $500 Ability to change HDD to SSD (if it has an SSD already, at least 250GB) 8GB Ram

Thanks!