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Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
OL-27644-01
Chapter 6 Installing and Upgrading Internal Modules and FRUs
Installing and Removing the PVDM4
• Installing the PVDM4 on the Cisco Fourth-Generation T1/E1 Voice and WAN NIM in the Cisco ISR
4451-X
• Removing the PVDM4 from the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface
Module in the Cisco ISR 4451-X
Tools and Equipment Required During Installation
You will need the following tools and equipment while working with PVDM4:
• Number 1 phillips screwdriver or a small flat-blade screwdriver
• ESD-preventive wrist strap
• (For routers using DC power) Tape to secure DC circuit breaker handle
PVDM4 Location and Orientation
The PVDM4 connector is located on the motherboard. Figure 6-19 shows the PVDM4, screws, and
connector. The connector on the PVDM4 must align with the corresponding connector on the
motherboard.
Figure 6-19 View of PVDM4 Connector and Screws
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