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Cisco ASA 5585-X Adaptive Security Appliance Hardware Installation Guide
OL-22567-02
Chapter 4 Maintenance and Upgrade Procedures
Removing and Installing the Power Supply Module
•
Connecting DC Power to the ASA 5585-X, page 4-19
•
Removing the DC Power Supply Module, page 4-24
AC/DC Power Supply Module Configurations
Table 4-2
lists the AD/DC power supply module configurations for the ASA 5585-X.
AC Power Supply Module
The ASA 5585-X ships with one AC power supply module and one fan module installed, except for the
ASA 5585-X with SSP-60, which ships with two AC power supply modules installed in a load
balancing/sharing configuration. The load balancing/sharing configuration ensures that if one power
supply module fails, the other power supply module assumes the full load until the failed power supply
module is replaced. To maintain airflow, both bays must be populated by either an AC power supply
module and a fan module, or two AC power supply modules.
You can replace the fan module with a second AC power supply module in any of these models to create
a redundant power-supply configuration. If you already have two AC power supply modules installed,
you can install or replace either power supply module without powering off the appliance, as long as one
power supply module is active and functioning correctly.
If only one power supply module is installed, do not remove the power supply module unless the
appliance has been powered off. Removing the only operational power supply module causes an
immediate power loss.
Note
Only the ASA 5585-X with SSP-60 supports either two AC or two DC power supply modules. Do not
mix AC and DC power supply modules in the same chassis.
Table 4-2
ASA 5585-X AC/DC Power Supply Module Configurations
Model
AC Configuration
DC Configuration
Option 1
Option 2
Only Option
SSP-10
Two AC power supply modules
One AC power supply module
One fan module
Two DC power supply modules
SSP-20
Two AC power supply modules
One AC power supply module
One fan module
Two DC power supply modules
SSP-40
Two AC power supply modules
One AC power supply module
One fan module
Two DC power supply modules
SSP-60
Two AC power supply modules
N/A
Two DC power supply modules