Dell PowerEdge T420 Owner's Manual page 80

CAUTION: Do not remove or install the internal cooling fan by holding the blades.
7. Press the release tab on the internal cooling fan and, holding the internal cooling fan by the sides, slide it out in the
direction of the arrow marked on the fan.
Figure 39. Removing and Installing the Internal Cooling Fan
1. arrow
2. internal cooling fan
3. internal cooling fan power cable
4. release tab
Figure 40. Cabling—Internal Cooling Fan
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