You seem to love spreading misinformation on the web. Why are you commenting 4 times if you are not familiar with the topic?
This is an m.2 connector. You have to secure it with a screw on the other side. It’s nearly impossible to mess it up.
Apple frequently uses proprietary connectors, I don’t know which one you are reffering to. I won’t guess because I’m not very familiar with all apple connectors.
You don’t have to comment on a topic if you are not familiar with. Please stop.