The RAM slots are located in the corner opposite to the cooling fan.

To remove existing RAM cards: there are clips holding the sides of each card. Simultaneously spread both right and left clip and the card will pop upward. Then it can easily be pulled out.

Slide in the RAM at a 45 degree angle.

Press down on the RAM until it snaps into place.

A good amount of pressure is needed to snap it in place.

Install the RAM in the left (lower) slot before installing RAM in the right (upper) slot