Sony DSC-HX90V Manual page 35

1. Open the memory card cover.
2. Insert the memory card.
Ensure that the notched corner is facing in the correct direction.
With the notched corner facing in the direction illustrated, insert the memory card
until it clicks into place.
3. Close the memory card cover.
Hint
When you use a memory card with this product for the first time, it is recommended that
you format the card using the product for stable performance of the memory card.