Supermicro X13DGU User Manual page 50

Super X13DGU User's Manual
Uninstalling the Fan Before Removing the PHM (for 4U
Heatsinks Only)
1. Loosen the torx screw from the heatsink. Unplug the fan power connector from the fan
header.
2. Gently pull the heatsink fan upward to detach it from the heatsink.
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