What Are the Differences Between a PoE Power Supply
Unit and a Common Power Supply Unit on a Quidway S2700/S3700/ S5700 Huawei Switch?
Answer:
On a S2700/S3700/S5700 switch, a PoE power supply unit
and a common power supply unit differ in their appearance and functions.
l Figure 1-1, Figure 1-2, and Figure 1-3 show their appearance. A
PoE power supply unit
has a fan, but a common power supply unit does not.
Figure 1-1 Common power supply unit
Figure 1-2 250 W PoE power supply unit
Figure 1-3 500 W PoE power supply unit
A PoE power supply unit can provide power for both the entire device and
the PDs, whereas a common power supply unit can provide power for only the
entire device.
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