Fans - NETGEAR M4350 Series Hardware Installation Manual

Fans

Each model integrates multiple temperature sensors that automatically regulate the fan
speed. A half-width model integrates three internal fans. A full-width model integrates
four internal fans.
The switch includes internal fans that support intelligent operation, which enables the
switch to automatically start the operation of the fans, gradually increase the speed of
the fans, and either halt PoE or block traffic if the internal switch temperature exceeds
a critical level.
The fans function with variable speeds, depending on the internal switch temperature,
use of the PoE budget, and traffic load. The fan speed can temporarily reach 100 percent.
In Quiet mode, the switch might automatically change back and forth between Cool
mode and Quiet mode until the detected internal switch temperature or use of the PoE
budget returns within safe operational thresholds. A full traffic load can also cause the
internal switch temperature to increase and the fans to function in Cool mode.
The fans support the following modes:
• Quiet: Quiet mode is the default mode. At approximate 30 percent speed, the fans
produce minimal sound. At higher speeds, the sound of the fans becomes more
noticeable. At 100 percent speed, the fans produce significant noise.
Table 13. Quiet mode fan settings
Model number PoE Power Load
M4350-24G4XF 720W
720W
M4350-48G4XF 1440W
1440W
M4350-44M4X4V 3314W
3314W
M4350-8X8F N/A
N/A
M4350-12X12F N/A
N/A
Hardware Overview
Fully Managed Switches M4350 Series
Fan Duty Range
28 to
60
28 to
60
28 to
60
27 to
70
27 to
100
44
Room Temp. Internal Switch
Range Temp. (Top)
25°C to 33.1°C to
45°C 48.2°C
25°C to 33.4°C to
45°C 48.5°C
25°C to 43.3°C to
45°C 50.1°C
25°C to 34.4°C to
50°C 51.7°C
25°C to 31.9°C to
50°C 51.5°C
Hardware Installation Guide
Acoustic Noise
Range
33dBA to
52dBA
33dBA to
52dBA
34dBA to
52dBA
34dBA to
56dBA
34dBA to
64dBA