Switch Dell Networking N4032F

Olá pessoal, possuo dois switchs em stack modelo N4032F e eles estão fazendo muito barulho no cooler (não é só por um período, é a todo momento) mas aparentemente está tudo normal com ele, gostaria se esse barulho dos coolers é normal neste modelo.

SWA-Master#show system

System Description: Dell Networking Switch
System Up Time: 4 days, 05h:45m:06s
System Contact:
System Name: SWA-Master
System Location:
Burned In MAC Address: F8B1.5649.8E4E
System Object ID: 1.3.6.1.4.1.674.10895.3044
System Model ID: N4032F
Machine Type: Dell Networking N4032F

System Thermal Conditions:

Unit Temperature State
(Celsius)
---- ----------- -----------
1 40 Good

Temperature Sensors:

Unit Description Temperature
(Celsius)
---- ------------------ -----------
1 MAC 40
1 CPU 34
1 PHY (left side) 31
1 PHY (right side) 36

Fans:

Unit Description Status
---- ----------- ------
1 Fan-1 OK
1 Fan-2 OK
1 Fan-3 OK
1 Fan-4 OK
1 PS-1 Fan OK
1 PS-2 Fan OK

Power Supplies:

Unit Description Status Average Current Since
Power Power Date/Time
(Watts) (Watts)
---- ----------- ----------- ---------- -------- -------------------
1 System OK 81.5 81.5
1 Internal(R) OK 39.8 39.8 08/09/2015 19:47:39
1 Internal(L) OK 41.6 41.6 08/09/2015 19:47:39
2 System Error 0.0 0.0

USB Port Power Status:
----------------------
Device Not Present