I was reading some online tutorials on how to replace my WiFi card in a old netbook I have laying around, and one of them was very different in the steps. Instead of disassembling the whole enclosure, removing the keyboard, some metal shield, and a piece of plastic, you can unscrew a panel on the bottom and slip it out. This seems weird that only one person is using this "flap," and that makes me have doubts. Will using this flap work? Should I be aware of anything else before trying this method? My computer has this flap, but is it meant for something else?
The link to the guide (Scroll down to step eight for a better picture of it.)