Watchguard Firebox M4800 Hardware Manual page 5

2.2.2021
Rear
Rear view of the Firebox:
Cooling fans
The fans decrease the internal temperature of the device. The fans start at maximum RPM when
the Firebox is powered on. The device adjusts the fan speed based on the external temperature
and device CPU load.
Power switch
Controls the power supplied to the Firebox. The Power switch activates both power supplies.
AC receptacles
Each AC receptacle accepts a detachable AC power cord supplied with the Firebox. Each power
supply is a WatchGuard standard auto-sensing AC power supply.
Replaceable power supplies
There are two power supplies on the Firebox M4800, each with a power indicator at the top. For
instructions to install a replacement power supply, see
Power Indicator Color
Green flashing
Green solid
Red flashing
Not lit
Alarm Reset button
When the Firebox is powered on, if either power supplies fails or is not connected to a power
source, an audible alarm sounds. To silence the alarm, press the alarm reset button, located to the
left of the power supplies. After you silence the alarm the indicator for the failed power supply
flashes red.
https://www.watchguard.com/help/docs/help-center/en-US/Content/en-US/Hardware-Guides/firebox-m4800-hardware-guide.html
Firebox M4800 Hardware Guide
Power Supply Status
Power is connected to at least one power supply, device is powered off
Power is connected, device is powered on
Power is not connected or power supply failed, device is powered on
Power is not connected, device is powered off
Power Supply Installation.
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