I just checked my laptop and it seems to have an extra slot for SSD/HDD and RAM. I tried scanning in crucial to know what recommended SSD and RAM I can add to the extra slots. These two (from screenshot) are my choices:
1.
http://prntscr.com/snawn4By the way here are the images of my laptops' extra slot and RAM:
1.
http://prntscr.com/snbfhf2.
http://prntscr.com/snbfpu3.
http://prntscr.com/snbfwlThank you in advance!