3. Install the WWAN card.
4. Install the M.2 SSD.
5. Install the base cover.
6. Follow the procedure in After working inside your computer.
I/O daughterboard
Removing the I/O daughterboard
CAUTION: The information in this removal section is intended for authorized service technicians only.
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
3. Remove the WWAN card. .
NOTE: This procedure applies only to the computers shipped with a WWAN card installed.
NOTE: For models that are shipped without a WWAN card, a WWAN shielding cover and WWAN bracket will be
preinstalled to the computer. As a result, follow the steps in the WWAN Card section to remove the shielding cover and
WWAN bracket before removing the I/O daughterboard.
NOTE: For models with WWAN configuration, the SIM card tray MUST be removed before removing the I/O
daughterboard.
Figure 70. Removing the I/O daughterboard
About this task
CAUTION:
Remove the system board before removing the I/O daughterboard as a part of the I/O daughterboard
is underneath the system board.
CAUTION: Do not try to remove the I/O daughterboard along with the system board.
The following image indicates the location of the I/O daughterboard and provides a visual representation of the removal
procedure.
Removing and installing Field Replaceable Units (FRUs)
99
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