Cisco 4000 Series - Platform Summary

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Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
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Chapter 1 Overview of Cisco 4000 Series ISRs
Chassis Views
Platform Summary
Figure 1-14 shows the internal view of Cisco 4431 ISR with parts and module locations.
Figure 1-14 Platform Summary of the Cisco 4431 ISR
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1 DIMMs 2 Forwarding plane processor
3 Control plane processor 4 NIMs
5 SFP GE ports 6 PVDM card