I just got a msi gt72vr dominator pro and i think it is called a m.2 ssd. It's 256gb I wanna add another one on . How would I go about this? Any help is grateful I'm new to this type of ssd. It looks like I can only have that one chip in but I saw a YouTube video of whatever the piece is called that it plugs into they had 4 inputs on it . Thanks alot