Lenovo Ideapad Yoga 13...white slider switch question

[mr.rhtuner]

Hey guys, I'm fixing up a friend's Lenovo Ideapad Yoga 13. As I installed a new hard drive, I noticed a white slider switch (in photo on the bottom right of board).
I've googled what I can and it seems to refer to a Wifi switch, but when I flip it the other way, the wifi still keeps working. Either position doesn't seem to affect the ideapad.

https://i.redd.it/dutv3vovqbiy.jpg

Does anybody have an idea what it could be for?