If your SD Card is not detected in the Device Manager, then this post will help you. This issue can occur due to hardware issues, outdated or corrupted drivers, faulty SD Card, faulty SD Card reader, ...
Steam Deck is a PC, and other applications and OSes can be installed. If you're installing Windows, you will need a few additional drivers to have the best experience. Links to these, along with notes ...
You can move pictures to an SD card using a PC, Mac, or Android phone. Depending on what device you're using, you may need an external SD card reader. If you're moving photos using an Android, you'll ...