Okay kiddo, have you ever played with LEGOs? Imagine how the blocks fit together, with little bumps on top and little holes on the bottom. Those bumps and holes help the blocks stick together properly. That's kind of how an edge connector works!
An edge connector is a little metal strip with lots of little bumps on it. It fits in a slot on something else, like a computer, and the bumps line up with matching holes on the inside of the slot. This helps connect the edge connector to the thing it's inside.
So let's say you have a computer card that you want to put inside your computer. The computer has a slot, and the edge connector on the card fits into that slot. The bumps on the edge connector match up with the holes inside the slot, and that helps the card connect to the computer so it can work properly.
Edge connectors are really useful for lots of different things, like memory cards or other computer components. They help make sure everything is connected properly so it can all work together. Pretty cool, huh?