Cisco 1921 User Manual

Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs
Modules Internal to the Cisco 1941 Router
7
Installing and Upgrading Internal Modules and FRUs in Cisco 1900 Series ISRs
Closing the Chassis
Step 1 Make sure that the router is turned off and is disconnected from AC power.
Step 2 Slide the top of the router (which is facing up toward you) back onto the bottom of the router.
Step 3 Turn the router upside down, and rest the top of the router on a flat surface.
Step 4 Use the Phillips screwdriver to install the screws that hold the top of the of the case to the chassis, as
shown in Figure 1. Torque the screws to 6 to 8 in-lb (0.68 to 0.90 N-m).
Step 5 Turn the router back to its original position (top up).
Step 6 Reconnect the AC power.
Locating Modules
Figure 3 shows where the locations of the ISM, unbuffered dual inline memory module (UDIMM),
power supply and blower located in the Cisco 1941 chassis.
Figure 3 Cisco 1941 Internal Modules
1 ISM
1
1. In the 1941W this is a WLAN module. It is not a user removable or installable.
2 UDIMM
3 Blower 4 Power supply
251368
2
1
4
3

Cisco 1921 Specifications

General

Product Type	Router
WAN Ports	2
Power Supply	AC 120/230 V (50/60 Hz)
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Memory	256 MB DRAM
Flash Memory	128 MB
Expansion Slots	1 x ISM
USB Ports	2 x USB
Dimensions	4.4 x 33 x 24.9 cm
Network / Transport Protocol	IPSec
Remote Management Protocol	SNMP, Telnet, HTTP, HTTPS, SSH
Features	Firewall protection, VPN support
Compliant Standards	IEEE 802.1Q
Operating Temperature	0 to 40 °C
Storage Temperature	-20 to 65 °C
Humidity	10 to 85% (non-condensing)
Weight	3.5 kg
Performance	Up to 25 Mbps throughput