How do you find out what kind of RAM it is in a situation where you haven't bought it yourself?
Before I start, I want to preface that I don't know much about the inside of a computer, and even less on how to assemble it. Like if you were to ask me what the RAM or motherboard generally looks like, I might be able to point it out, but other than what they do, that's the extent of my knowledge.
So we've had this computer in our house for a while (like a few years). My dad brought it home from somewhere, put it down and then never messed with it lol. Anyway, now that we're moving out, I figured since the back has popped off and it's easy to access what's inside, I'd look around (mostly for RAM, just in case). I found the RAM, and I was looking at it, and I realized I had never actually seen what a RAM looks like in person. I had assumed it'd tell you what the RAM was (like how many GB it has, or if it's DDR3 and stuff), but it doesn't. So it kind of made me wonder: in a situation like mine where you're looking at RAM you haven't bought it yourself, how do you find out? Do you have to research it? Are you somehow able to just tell by looking at it? I understand if this is kind of basic, but I'm curious about this and want to understand.
Here's a picture of the RAM btw: