See answer in your other post -- the clamshell model is SSD-upgradeable, but on both the clamshell and 2-in-1, memory is soldered in and not upgradeable;  on the 2-in-1, the SSD is also soldered in and not upgradeable.  
hi all,   new to this form. I'm looking to purchase a Dell XPS 13-9310. Is it possible to upgrade the RAM and SSD on your own? I have been chatting with someone who is saying this is not possible.   thank you
SSD and RAM upgrade (XPS 13)