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Lantronix
SM24TBT2DPA and SM24TBT2DPB Web User Guide
2-1.2 Power Information (SM24TBT2DPB or DPB-2X)
The SM24TBT2DPB Power Information page displays power related information for Power Supplies A and
B. Note that the Configuration > PoE > Power Information page also has power supply settings.
The SM24TBT2DPB ships with one PS-ACDC-1200 power supply, which lets it supply up to 90 Watts per
port. The SM24TBT2DPB-2XPS, or SM24TBT2DPB with a second power supply added, can provide full
PoE++ output on all 24-ports with its two hot-swappable PS-ACDC-1200 power supplies.
See the SM24TBT2DPB Install Guide for more Power Supply Operating Mode Settings information.
When SM24TBT2DPB Power Supply Operating Mode = Redundant Mode:
With Power Supply Operating Mode configured as “Redundant” Mode, the two power supplies are
mutually redundant. If one of the power supplies fails, the other power supply can keep the system
working normally.
The PoE maximum output power of the two power supplies cannot be aggregated. The PoE maximum
output Power Budget in “Redundant” Mode is equal to the PoE Budget of a single power supply.
With Power Supply Operating Mode set to Boost Mode:
a
. When Power Supply Operating Mode is set to “Boost” mode, the power supply redundancy function will
be disabled. If one of the power supplies fails, and the PoE power consumption is over the other power
supply’s Max. PoE output power capability, the power supply will overload and shutdown this PoE switch.
b
. The PoE maximum output power of the two power supplies can be aggregated. The PoE Max. PoE
output Power Budget in Boost Mode is equal to the Power Supply A + Power Supply B.
SM24TBT2DPB-2XPS Power Supply Operating Mode = Redundant Mode (default):