D-Link xStack Hardware Installation Manual page 45

xStack® DGS-3420 Series Layer 2+ Managed Stackable Gigabit Switch Hardware Installation Reference Guide
PoE Specifications
•
Supports IEEE 802.3af PoE and IEEE 802.3at PoE+ compliance.
•
Supplies power to PD devices up to 15.4W per port (802.3af) or 30W+ per port
(802.3at) more sufficiently.
•
Power Budget: 370W.
•
Supports the Auto Discovery feature. It'll automatically recognize a connection to
PD devices and immediately provide power.
•
Supports the Auto Disable Port feature. If the port's electrical current is over 600mA,
this feature will activate and still keep the other ports active.
•
Supports the Active Circuit Protection feature. It'll automatically disable a port if
there is an electrical short and still keep the other ports active.
Power Classification Table:
Class Usage
0 Default
1 Optional
2 Optional
3 Optional
4 Reserved
•
For 802.3at capable devices, provide power allocation of 0.1 watt granularity using
LLDP method.
Class Usage
0 Default
1 Optional
2 Optional
3 Optional
4 Reserved
Class Usage
0 Default
1 Optional
2 Optional
3 Optional
4 Reserved
•
Follow the PSE pin out standard of Alternative A, sending out power over pins 1, 2,
3, 6 and 8 of CAT3~6A UTP cables for 802.3af devices; or CAT5e~6A UTP cables
for 802.3at devices.
•
DGS-3420-28PC, DGS-3420-52P works with all D-Link 802.3af and 802.3at
capable devices It also works with all non-802.3af and non-802.3at capable D-Link
Access Points, IP Cameras and IP phones using the DWL-P50 PoE adapter.
Max power used by PD
12.95W
3.84W
6.49W
12.95W
12.95W
Minimum power levels of output of PSE
15.4W
4.0W
7.0W
15.4W
31W
Max power received by PD
13.0W
3.84W
6.49W
13.0W
25.5W
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