If the fans are functioning in Quiet mode, the switch automatically manages the fans
and turns on the fans or gradually increases the speed of the fans under the following
conditions:
•
PoE+ and PoE++ models: Either the internal switch temperature detected by the
temperature sensor or sensors exceeds its threshold or a PoE budget is exceeded.
•
Other models: Either the internal switch temperature detected by the temperature
sensor exceeds its threshold or the switch processes a full traffic load.
If the internal switch temperature detected by a sensor exceeds a threshold, the switch
records a fan operation message in its log, and might change from Quiet mode to Cool
mode. If the internal switch temperature exceeds a critical threshold and an alarm is
generated, the operation of the switch might be limited, and for PoE models, PoE might
be disabled. To return the switch to normal operation, you must restart the switch.
Speed and cables
The following table describes the network cables that you can use for the switch
connections and the speeds that these cables can support, up to 100 meters (328 feet).
Table 15. Speed and cables
Cable TypeSpeed
Category 5 (Cat 5) or higher rated
Note: In most business networks, Cat 5e cables superseded Cat 5 cables.
100 Mbps
Category 5e (Cat 5e) or higher rated1 Gbps or 2.5 Gbps
Category 6a (Cat 6a) or higher rated5 Gbps or 10 Gbps
Hardware Installation Guide46Hardware Overview
Fully Managed Switches M4350 Series
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