How to move pictures and other files to an SD card using your computer or Android phone

You can move pictures to an SD card using a PC, Mac, or Android phone, as long as you have the right card and equipment.

How to format an SD card and erase all of its data

You can format an SD card using Windows, Mac, and Android devices, and likely your digital camera too.
Ars Technica

Android 11, Scoped Storage, and micro SD cards... how to I make my apps see my files?

I want to put a bunch of ROMs on my SD card for the various emulators on my Android device. I setup the card as "tablet storage" instead of "portable storage". I see a combined 192 GB in the storage ...