Casio G'z One User Manual page 29

The front and back of the memory card look different.
When inserting the memory card, make sure the
correct side is facing up. If not, the card may become
stuck or damaged.
Warning!
1.
Open the memory card slot cover. With the
front of the memory card facing as shown in the
illustration below, insert it into the slot.
2.
Carefully press the memory card into the slot
until it locks into place.
Insert like this.
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