Cisco 4000 Series - AC Power Supplies; Overview of the AC Power Supply

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Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers
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Chapter 5 Install and Upgrade Internal Modules and FRUs
Remove and Replace Cisco 4000 Series ISRs Power Supplies
AC Power Supplies
Overview of the AC Power Supply
Power supply has a similar modular form factor without cabling for easy removal and replacement.
Figure 5-31 Power Supply Unit (Cisco 4461 ISR Shown)