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Knowledge Base

FAQ-S27 & 37 & 57 series switches PoE power usage note .

Publication Date:  2012-09-20  |   Views:  1129  |   Downloads:  0  |   Document ID:  EKB1000015456


Issue Description

what is the PoE power usage note of S27 & 37 & 57 series switches?

Alarm Information


Handling Process

Switch PoE switch downlink electrical ports support PoE power supply.  Per port maximum power is 30W, maximum power supply distance is100m;
2. PoE power is divided into two kinds: 500W current equalization power and 250W current equalization power . 500W power supply only 369.6W can be used for PoE power supply, 250W power supply only 123.2W can be used for PoE power supply;
3. The V100R005 version of the switch port support the maximum POE voltage is 30W, the V100R003 maximum support is 15.4W.  V100R003 upgrade to V100R005 does not work, equipment hardware limitations when leaved the factory.  So only the switches that leave the factory with setting the V100R005 version can support maximum 30W power supply;
4. The standard AP supply voltage is 15.4W, 500W power POE power supply can be powered to 24 standard AP.  250W power POE power supply up to give the eight standard AP.

Root Cause