sd card format

This is my first question to this forum. I hope you can assist.
I recently acquired a ender 3 pro second hand, however the sd card did not come with it.

I do have sd cards, so that’s not a problem, however what are the hw requirements of the sd card?

How much storage max?
What format Windows fat or …?
Any other …

Thanks Eppo (Amsterdam)

For firmware updating 8Gig SD card max (no pertitioning larger sizes) formated for FAT/FAT32.

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