Dell P175G Owner's Manual page 101

NOTE: Orient the I/O daughterboard bridge connection board so that the arrows etched on the connector point
upwards when reinstalling it.
13. Remove the bridge connector board from the computer.
NOTE: When reinstalling the I/O daughterboard bridge connector board secure the six screws (M2x4) in sequential
order (1 > 2 > 3 > 4 > 5 > 6) marked on the FPC.
14. Remove the three screws (M2x2.5) securing the I/O daughterboard to the palm-rest and keyboard assembly.
15. Use a plastic scribe to lift the I/O daughterboard out of its compartment from the gap in its top side and remove it from the
computer.
16. Peel the WWAN thermal pad that is affixed to the WWAN card compartment and move it to the new I/O daughterboard if
you are replacing the I/O daughterboard for models that are shipped with 5G WWAN card.
17. Lift and remove the I/O daughterboard from the palm-rest and keyboard assembly.
NOTE: The thermal pad sticker adhered onto the WWAN card compartment must be peeled off and transferred over to
the replacement I/O daughterboard.
Figure 72. Latitude 7450 Clamshell 4G WWAN Configuration (Gasket Sticker)
Figure 73. Latitude 7450 2-in-1 4G WWAN Configuration (Gasket Sticker)
Removing and installing Field Replaceable Units (FRUs) 101