Sony VGN-AR170GU1 - Manual (Page 73)

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Using Your VAIO Computer
Removing a Memory Card
!
Do not remove a memory card while the SD memory card indicator light is on. The card or its data may become damaged.
To remove a memory card
1 Check that the SD memory card indicator is off.
2 Press the extended part of the memory card, causing it to extend out from the slot.
3 When the card extends, carefully pull it out of the slot.