Cisco 1941 Installing And Upgrading

Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs
Modules Internal to the Cisco 1941 Router
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Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs
Software Requirement for ISMs
Cisco IOS software of a specified release or later release is required for using an ISM.
To determine the version of Cisco IOS software that is running on your router, log in to the router and
enter the show version command:
Router> show version
Cisco Internetwork Operating System Software
2900 Software (C2900-ADVENTERPRISEK9-M), Version 12.3(8.2)T, INTERIM SOFTWARE
ISM Location
See the “Locating Modules” section on page 7 for the location of the ISM.
Removing an ISM
Before you remove an ISM, remove the chassis cover as described in the “Opening and Closing the
Chassis” section on page 5.
To remove an ISM, perform the following procedure. To complete this procedure, you need a number 2
Phillips screwdriver or flat-blade screwdriver.
Step 1 Locate the ISM to be removed. See the “Locating Modules” section on page 7 for the location of the
ISM.
Step 2 Remove the four screws from the ISM as shown in Figure 7.
Figure 7 Removing Screws from the ISM
Step 3
Carefully lift the ISM from the connector and the standoff. Keep the ISM parallel with the system board
to prevent damage to the connector and standoff.
Step 4 Place the ISM in an antistatic bag to protect it from ESD damage.
1 ISM retention screws (4)
250947
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Cisco 1941 Specifications

General

Product Type	Router
Product Series	1900
Model	1941
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Flash Memory	256 MB
Power Supply	Internal power supply
Power	AC 120/230 V (50/60 Hz)
Operating System	Cisco IOS
Product Name	Cisco 1941
Form Factor	Rack-mountable
Network/Transport Protocol	IPSec, L2TP, PPPoE, PPPoA
Remote Management Protocol	SNMP, Telnet, SSH, HTTP, HTTPS
Features	Firewall protection, VPN support, VLAN support
Interfaces	2 x 10/100/1000Base-T Ethernet WAN, 2 x USB 2.0
Expansion Slots	2 x EHWIC 1 x ISM slot
Wireless LAN	No
RAM	512 MB (installed) / 768 MB (max)