H3C S5500-HI Switch Series Installation Manual page 73

Model
S5500-34C-HI
S5500-58C-HI
S5500-34F-HI
S5500-34C-PWR-HI
S5500-58C-PWR-HI
Cooling system design
Six fans at most, including three fans for the system, one fan for
each power module, and one for interface card slot SLOT1.
Four fans at most, including two fans for the system and one fan for
each power module.
Five fans at most, including three fans for the system and one fan
for each power module
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