Cable distance
Half the
distance
specified by
the IEEE
standard.
Note
Modal bandwidth
(MHz/km)
Core diameter (microns)
5 kmSingle modeG.652Cable and operating
distance
Power Supply Modules
The Firepower 4100 supports two AC or DC power supply modules so that dual power supply redundancy
protection is available. Facing the back of the chassis, the power supply modules are numbered left to right,
for example, PSU1 and PSU2.
The system power requirements are lower than the power supply module capabilities. See Hardware
Specifications, on page 28 for the system power requirements.
Note
After removing power from the chassis either by moving the power switch to OFF or unplugging the power
cord, wait at least 10 seconds before turning power back ON.
Note
Make sure that one power supply module is always active.
Attention
See Remove and Replace the Power Supply Module, on page 63 for the procedure for removing and replacing
the power supply module.
AC Power Supply
The power supplies can supply up to 1100-W power across the input voltage range. The load is shared when
both power supply modules are plugged in and running at the same time. The power supply modules are
hot-swappable.
Table 7: AC Power Supply Module Hardware Specifications
SpecificationDescription
100 to 240 V ACInput voltage
Cisco Firepower 4112, 4115, 4125, and 4145 Hardware Installation Guide
22
Overview
Power Supply Modules
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