@matchaman I saw that image too, but didn't look into it, because I thought its a SIM card. So, these are essentially Nano sd cards. But they are only produced by Huawei, so maybe not a standard soon. https://nasilemaktech.com/nm-card/
@FlashFlood2864 That's good news. Your welcome. If you get any problems with your wifi connection in the near future, you can try changing the wifi channel in your Router's administration.
Being on a wifi channel chosen by your Router is not always feasible and could decrease the wifi's signal if there are too many wifi network's using the same wifi channel. The Router might have a built-in wifi channel tester. :-)