Dell Latitude 12 7212, Owner'S Manual, Page: 20 / 79

Installing WLAN card
1 Insert the WLAN card in the slot on the system board.
NOTE: Ensure that the metal pin is downwards towards the slot on the system board, and an angle LESS than 30° is
maintained.
2 Connect the WLAN cables to the connectors on the WLAN card.
NOTE: Ensure that cables are aligned straight and gently press on the top to fit the cable copper head on WLAN card
button pin.
3 To secure the WLAN card, place the antenna bracket and tighten the M2.0 x 3.0 screw.
4 Install the:
a Display assembly
b Battery
5 Follow the procedure in After working inside your computer .
WWAN card
Removing WWAN card
1 Follow the procedure in Before working inside your computer .
2 Remove the:
a Battery
b Display assembly
3 To remove the WWAN card:
a Place the back side of system on a flat surface.
b Locate the WWAN card.
c Remove the screw that secures the WWAN bracket to the system board [1].
d Lift the metal bracket [2] from the system board.
e Disconnect main and auxiliary cables [3] with a plastic scribe from the connector on the WWAN card.
NOTE: Insert the edge of the plastic scribe between the tiny gap of cable copper head and WWAN card
button pin.
f Slide and lift the WWAN card from the slot on the system board [4].
NOTE: Ensure to lift the WWAN card by an angle NOT more than 35°.
CAUTION: Never touch the metal pins or the circuit with bare hands. Touch at the side of the WWAN card.
20 Removing and installing components