How can I find out how many pins my mainboard has so that I can expand my RAM?

Without unscrewing it, of course. I want to expand from 8 to 16gb because I work a lot with the laptop and it sometimes gets overloaded very quickly. I once googled my mainboard (FA706IU) and looked at every link to it and none of them mentioned whether 260 or 288 pins were required. Is there another way to find out?

Laptop 204

pc 240