Cisco 4221 ISR, Hardware Installation Manual, Page: 31 / 230

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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
Figure 1-5 on page 1-11 —Bezel view with two PSUs
Figure 1-6 on page 1-12 —View of the chassis
Figure 1-7 on page 1-12 —Bezel side LEDs
Figure 1-5 Bezel View of Cisco 4431 ISR with Two Power Supply Units
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Power supply unit
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LEDs
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On/Off switch
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Optional power supply unit
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