Qsan XCubeSAN XS5224D Hardware Owner's Manual page 117

Figure 6-14 Procedures of Removing the Fan Module
Installing the Fan Module
The following details the steps of installing the fan module into the system chassis.
Use one hand to hold one end of the fan module (the side with release tab and handle)
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and the other hand hold the bottom of the module; then align it with the empty slot.
Installation direction of LFF and SFF systems is the same.
Push the fan module all the way into the empty slot until hear the "click" sound from the
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release tab.
Quick Maintenance
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