Dell Precision 3431 Small Form Factor Service Manual

6. Remove the heat sink with fan:
a) Disconnect the heat sink fan cable from the system board [1].
b) Loosen the four captive screws that secure the heat sink [2] and lift it away from the system [3].
NOTE:
Loosen the screws in a sequential order (1,2,3,4) as mentioned on the system board.
102 Installing the USB Type-C card

Dell Precision 3431 Small Form Factor Specifications

General

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