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CHAPTER
6-1
Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
OL-27644-01
6
Installing and Upgrading Internal Modules and
FRUs
This document describes how to install and upgrade internal modules and field replaceable units (FRUs)
in the Cisco 4451-X Integrated Services Router (ISRs). The install and upgrade information is contained
in the following sections:
Internal and External Modules
• Safety Warnings, page 6-2
• Accessing Internal Modules, page 6-4
• Locating Internal and External Slots for Modules, page 6-5
• Overview of the SSD Carrier Card NIM (NIM-SSD), page 6-6
• Installing and Removing DDR DIMMs, page 6-18
• Installing and Removing NIMs and SMs, page 6-23
• Installing and Removing the PVDM4, page 6-25
• Removing and Replacing the USB Flash Token Memory Stick, page 6-30
• Replacing Power Supplies and Redundant Power Supplies, page 6-31
• Removing and Installing a CompactFlash Memory Card, page 6-36
• Removing, Replacing, and Installing an Internal PoE Card, page 6-41
FRUs
• Replacing a Fan Tray, page 6-34
• Removing and Installing a CompactFlash Memory Card, page 6-36
• Installing SFP Modules, page 6-38
Caution Read the Safety Warnings section and disconnect the power supply before you perform any module
replacement.
See the “Accessing Internal Modules” section on page 6-4 for instructions on how to install and replace
internal components.