Cooling Fans - Dell EMC PowerEdge R740 Installation And Service Manual

Figure 35. Installing the cooling fan assembly
Next step
Follow the procedure listed in

Cooling fans

Cooling fan details
The cooling fans are integrated into the system to dissipate the heat generated by the functioning of the system. These fans provide
cooling for the processors, expansion cards, and memory modules.
Your system supports up to six standard or high performance hot swappable cooling fans.
For single processor systems, only four standard cooling fans are required. Fan bays one and two are covered by a fan blank.
CAUTION: Mixing of standard and high performance cooling fans is not supported.
NOTE: Each fan is listed in the systems management software, referenced by the respective fan number. If there is a problem
with a particular fan, you can easily identify and replace the proper fan by noting the fan numbers on the cooling fan assembly.
82 Installing and removing system components
After working inside your system.