Router Installation Guide

Chapter 1 Cisco XR 12406 Router Overview
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Cisco XR 12406 Router Installation Guide
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DC-Input Power Entry Module
The DC-input PEM (Figure 1-9) is a removable power module that installs in one
of the bottom two bays on the front of the chassis (see Figure 1-1). These power
modules support the OIR feature and are hot-swappable.
Note When operating your router on a single power module, the second power module
bay must have a blank filler (MAS-GSR-PWRBLANK=) installed to ensure EMI
compliance.
Caution The Cisco XR 12406 Router is configured for either AC power or DC power. Do
not mix AC-input power supplies and DC-input PEMs.
Figure 1-9 DC-Input Power Entry Module
1 DC-input PEM 4 Captive screws on release levers
2 Handle 5 Air inlet for cooling fan
3 Circuit breaker ON/OFF switch —
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