Fans For The 40-Port Poe+ And Poe++ Models - NETGEAR GSM4248PX Hardware Installation Manual

Fans for the 40-port PoE+ and PoE++ models

The following table describes the thresholds and operational properties of the fans for
the 40-port PoE+ and PoE++ models. (The temperatures in Fahrenheit are rounded
down.)
Table 13. Fan operation properties for the 40-port PoE+ and PoE++ models
Fan Mode
Off mode
Temp. sensor 1 or
Temp. sensor 2
PoE budget
Load
Fan use
Quiet mode with fan use below 30%
Temp. sensor 1 or
Temp. sensor 2
PoE budget
Load
Fan use
Quiet mode with fan use from 30 – 100%
Temp. sensor 1 or
Temp. sensor 2
PoE budget
Load
Fan use
Cool mode with maximum cooling
Fan use
Example of intelligent fan operation:
If the fans of model M4250-40G8F-PoE+ operate in Off mode and either the temperature
detected by the temperature sensor 2 exceeds 122F (50C) or the PoE budget exceeds
30W, the switch automatically places the fans in Quiet mode.
Hardware Overview
AV Line of Fully Managed Switches M4250 Series
M4250-40G8F-PoE+
≤ 98F (37C)
≤ 122F (50C)
≤ 30W
Maximum 8 Ethernet ports
active. SFP ports not
active.
Off
< 102F (39C)
< 123F (51C)
≤ 340W
Full traffic load
< 30%
102F (39C) – 118F (48C)
123F (51C) – 134F (57C)
340W – 480W
Full traffic load
≥ 30 – 100%
100%
M4250-40G8XF-PoE+
Off mode is not supported
< 95F (35C)
< 118F (48C)
≤ 560W
Full traffic load
< 30%
95F (35C) – 114F (46C)
118F (48C) – 134F (57C)
560W – 960W
Full traffic load
≥ 30 – 100%
100%
43
M4250-40G8XF-PoE++
Off mode is not supported
< 102F (39C)
< 122F (50C)
≤ 320W
Full traffic load
< 30%
102F (39C) – 118F (48C)
122F (50C) – 132F (56C)
320W – 2880W with three
power supplies active.
Full traffic load
≥ 30 – 100%
100%
Hardware Installation Guide