Canon EOS R50 Mirrorless Camera (White) - Manual (Page 46)

3.
Insert the card.
Insert the card with the label facing the front of the camera until it clicks
into place.
Caution
Make sure the card's write-protect switch (1) is set upward to
enable writing and erasing.
4.
Close the cover.
Press the cover closed, then slide the card/battery compartment cover
lock to lock it.
Caution
You cannot use batteries other than the Battery Pack LP-E17.
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