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DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
15
PoE
The DGS-3130-30PS and DGS-3130-54PS switches support Power over Ethernet (PoE) as defined by the IEEE
802.3af and 802.3at. All ports can support PoE up to 30W. The Switch ports can supply about 48 VDC power to
Powered Devices (PDs) over Category 5 or Category 3 UTP Ethernet cables. The Switch follows the standard Power
Sourcing Equipment (PSE) pin-out Alternative A, whereby power is sent out over pins 1, 2, 3 and 6. The Switches
work with all D-Link 802.3af capable devices.
The Switch includes the following PoE features:
• Auto-discovery recognizes the connection of a PD and automatically sends power to it.
• The auto-disable feature occurs under two conditions:
 If the total power consumption exceeds the system power limit
 If the per-port power consumption exceeds the per port power limit
• Active circuit protection automatically disables the port if there is a short. Other ports will remain active.
Based on IEEE 802.3af/at, power is received and supplied according to the following classifications:
Class Maximum power used by the PD Maximum power supplied by the Switch
0 12.95 Watts 16.2 Watts
1 3.84 Watts 4.2 Watts
2 6.49 Watts 7.4 Watts
3 12.95 Watts 16.2 Watts
4 25.5 Watts 31.6 Watts
PoE System
This window is used to configure the PoE system and display the detailed power information and PoE chip parameters
for PoE modules.
To view the following window, click System > PoE > PoE System, as shown below:
Figure 3-101 PoE System Window
The fields that can be configured for PoE System are described below:
Parameter Description
Unit Select the stacking unit ID of the Switch that will be configured here.
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