3Com 4500 PWR 26-Port Configuration Manual page 617

It can deliver data and current simultaneously through data wires (1,2,3,and 6) of category-3/5
twisted pairs.
Through the fixed 24/48 Ethernet electrical ports, it can supply power to up to 24/48 remote
Ethernet switches with a maximum distance of 100 m (328 feet).
Each Ethernet electrical port can supply at most a power of 15,400 mW to a PD.
When AC power input is adopted f
300 W. The switch can determine whether to supply power to the next remote PD it detects
depending on its available power.
When DC power input is adopted for the switch, it is capable of supp
24/48 ports, that is, 15,400 mW for each port, and the total power is 369.6 W/739.2 W.
The PSE processing software on the switch can be u
The switch provides statistics about power supplying on each port and the whole equipment, which
you can query through the dis
The switch provides two modes (auto and manual) to manage the power feeding to ports in the
case of PSE power overload.
The switch provides over-temperature protection mechanism. Using this mechanism, the switch
disables the P
self-protection, and restores the PoE feature on all its ports when the temperature drops below
60°C (140°F).
The switch supports the P
user groups. These PoE policies are each saved in the corresponding PoE profile and applied to
ports of the user groups.
When you use the PoE-capable Switch 4500 to supply power, the PDs need no external power
supply.
If a remote PD has an external power supply, the PoE-capable Switch 4500 and the external power
supply will backup each other for the PD.
Only the 100 Mbps Ethernet electrical ports of the PoE-capable Switch 4500 support the PoE
feature.
PoE Configuration
PoE C onfiguration Task List
Complete the following tasks to configur
Enabling the PoE Feature on a Port
Setting the Maximum Output Power on a Port
Setting PoE Management Mode and PoE Priority of a Port
Setting the PoE Mode on a Port
Configuring a PD Disconnection Detection Mode
or the switch, the maximum total power that can be provided is
play command.
oE feature on all ports when its internal temperature exceeds 65°C (149°F) for
oE profile feature, that is, different PoE policies can be set for different
e PoE config
Task
pgraded online.
uration:
49-2
lying full power to all of the
Remarks
Required
Optional
Optional
Optional
Optional