add or replace RAM

First, I would want to know for sure which model you have (there are a lot of devices at iFixit, but there are so many Windows laptops it would be hard to have device pages for all of them).

But assuming you have categorized this correctly (and based on my experience with other Razer laptops), the RAM is not upgradeable. It is soldered directly to the motherboard. I would wager these are the RAM chips on the board. Occasionally a slot shows up on the back of laptop boards, but that is more often for a second SSD than RAM unless it's a beefy enough system that it can accommodate 4 RAM sticks.