D-Link DES-1228P - Manual (Page 12)

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4. DEM-331R (TX-1310/RX-1550nm), up
to 40km, Single-Mode
- Compliant to following standards:
1. IEEE 802.3z compliance
2. IEEE 802.3u compliance
1000Mbps Copper
ports in the front
panel
2 1 000Base-T ports
1000Base-T ports compliant to following
standards:
1. IEEE 802.3 compliance
2. IEEE 802.3u compliance
3. IEEE 802.3ab compliance
4. Support Full-Duplex operations
Power over Ethernet
PoE Capable Ports Port 1-24
PoE Specification
1. Supplies power to PD device up to 15.4W
per port, meeting IEEE802.3af standards and
more sufficiently is able to provide power to PD
devices
2. Power Budget: 170W max
3. Auto discovery feature, automatically
recognize the connection of PD device and
immediately sends power to it
4. Auto disable port if the port current is over
350mA while other ports remain active
5. Active circuit protection, automatically
disables the port if there is a short while other
ports remain active