Dell Venue 7 (3741, Late 2014) - Manual (Page 8)

8 | Inserting the MicroSD Card and Micro-SIM Card (optional)
Inserting the MicroSD Card and
Micro-SIM Card (optional)
Open the card-slot door
Insert the cards into the respective slots
and push the cards in until they click in
place
Close the card-slot door
NOTE: Make sure the cards are correctly aligned and are inserted all the way.
NOTE: Turn off your device before inserting the microSD card and
micro-SIM card.