Dell Precision 3431 Small Form Factor Service Manual

3. Install the:
a) Hard drive and optical drive module
b) Front bezel
c) Side cover
4. Follow the procedure in After working inside your computer.
M.2 2230 WLAN card - optional
Removing the M.2 2230 WLAN card
1. Follow the procedure in Before working inside your computer.
2. Remove the:
a) Side cover
b) Front bezel
c) Hard drive and optical drive module
3. To remove the M.2 2230 WLAN card:
a) Remove the screw (M2) that secures the WLAN card bracket and the WLAN card to the system board [1].
b) Slide and lift the WLANs card bracket off the WLAN card [2].
c) Disconnect the antenna cables from the WLAN card [3].
d) Slide and remove the WLAN card out of the WLAN card slot [4].
Removing and Installing components
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Dell Precision 3431 Small Form Factor Specifications

General

Brand	Dell
Model	Precision 3431 Small Form Factor
Category	Desktop
Language	English