Replacing Power Supplies And Redundant Power Supplies - Cisco WS-C2950-24 Installation Manual

Replacing Power Supplies and Redundant Power Supplies

Figure 5-23
Replacing Power Supplies and Redundant Power Supplies
Except for the Cisco 2901 router, all Cisco 2900 series routers have replaceable power supply modules
and external redundant power supplies (RPS). The Cisco 3900 series routers cannot use an external RPS,
and instead use one or two (optional) internal power supplies. All of the internal power supplies for the
2900 series and the 3900 series are modular and do not have internal cabling. These modular power
supplies can be removed or installed using only a screwdriver.
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Replace power supplies with the types shown in
Note
Cisco 2900 Series and 3900 Series Hardware Installation Guide
5-28
Proper Installation of PVDM2 in the Adapter
Replacing the Cisco 2901 Router Power Supply section, page 5-30
Replacing the Cisco 2911 Router Power Supply section, page 5-32
Installing and Removing the Cisco 2911 Router Optional DC Power Supply section, page 5-33
Installing the Cisco 2911 Router Power Supply Blank section, page 5-34
Replacing the Cisco 2911 Router Redundant Power Supply section, page 5-36
Replacing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Power Supply section, page 5-36
Inserting POE supply in an Ethernet Switch Network Module section, page 5-39
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Installing and Removing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Optional DC Power
Supply section, page 5-40
Installing and Removing a Redundant Power Supply Adapter section, page 5-42
Chapter 5 Installing and Upgrading Internal Modules and FRUs
Table 5-2.
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