I bought this laptop (Y510P) like 3 years ago and now i wanted to add a SSD to msata slot but when i opened it i couldn't find the slot.. I mean, **bleep**? So i guess i can't put any ssd there? 

Hi dragonzvil , 

Welcome to the Community Forums. 

There are variant design for Y510p that do not have the SSD slot as compared in the image below to those that was ordered with an SSD :

[oldimg]2.JPG[/oldimg]

Option for SSD can still be done by either replacing current HDD to SSD  and using the ultrabay for the HDD similar to those done in this discussion.

Hope this help answer your query.

Regards