1
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-xxxxx-xx
C O N T E N T S
C H A P T E R
1
Overview of the Routers
1-1
Chassis Views
1-2
Cisco 2901 Chassis
1-2
Cisco 2911 Chassis
1-4
Cisco 2921 and Cisco 2951 Chassis
1-6
Cisco 3900 Series Chassis
1-8
Locating the Serial Number, PID, VID and CLEI
1-12
Labels on Cisco 2901
1-13
Labels on Cisco 2911
1-14
Labels on Cisco 2921 and Cisco 2951
1-15
Labels on Cisco 3925 and Cisco 3945
1-15
For Additional Help Locating Labels on the Router
1-16
Hardware Features
1-17
Built-in Interface Ports
1-17
Gigabit Ethernet Ports
1-17
USB Serial Console Port
1-18
Removable and Interchangeable Modules and Cards
1-18
Services Performance Engine
1-21
Service Modules
1-21
Enhanced High-Speed WAN Interface Cards
1-21
Integrated Service Modules
1-22
Packet Voice Data Modules
1-22
Memory
1-22
Power Supplies
1-24
Module and Router Power Consumption
1-25
Fans, Ventilation, and Airflow
1-25
Real-Time Clock
1-27
Secure Key
1-28
Cryptographic Accelerator
1-28
Slot, Port, and Interface Information
1-28
LED Indicators
1-30
Specifications
1-33
Periodic Inspection and Cleaning
1-47