Hardware SDXC Compatibility Question

[IshMeNick]

On the official Nintendo website, it says the Wii U is not compatible with SDXC cards. If that’s the case, how is it possible that tutorials/guides posted here tell readers to have a 64+ GB SDXC card?

 

[Milenko]

I'm using a 128GB SDXC, works great

 

[IshMeNick]

I'm using a 128GB SDXC, works great

Did you format it to FAT32 or did it work straight from the packaging?