I am using a pretty old pre-built pc, I decided to upgrade a few parts since I currently cannot afford a new pc or build a new one, however, my question is about my ram, on the product's support site it says I can hold 16 GB ram with my model, scans like crucial scan says I can upgrade to 16, a few other sites have said 16 gb, but when I run the cmd command it says I can hold a total of 8 gb ram, which is fine, I'll get 8 gb ram, but I have 4 slots so does that mean I would install 2 gb ram per slot? or can I install 2, 4gb rams?