Cisco Gigabit Switch Router 12008 Installation And Configuration Manual page 26

Features of the Cisco 12008 Router
Figure 1-1
The Cisco 12008 supports the following features:
•
Online insertion and removal (OIR) capability—This feature allows you to insert or
remove the following router components:
— Power supplies—One AC-input power supply or one DC-input power supply is a
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Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
Cisco 12008 Gigabit Switch Router
required router component. You can remove or replace a power supply, without
disrupting system operations, only if a second (redundant) unit of the same type is
installed in the system.