Pioneer AVIC-F500BT Hardware User Manual page 16

1.7 Using a SD Card
NOTE: Please ensure that no foreign objects enter the card slot.
Your device features a SD slot where you can insert an optional storage card. To
use a storage card, insert it into the card slot, with the connector pointing to the
slot and its label facing the front of the device.
To remove a card, first make sure that no application is accessing the card, and
then slightly push the top edge of the card to release it and then pull it out of the
slot.
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