Cisco 4221 ISR User Manual

6-25
Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers
OL-32185-02
Chapter 6 Install and Upgrade Internal Modules and FRUs
Install and Remove DDR DIMMs on Cisco 4400 or 4300 Series ISRs
DIMMs have a polarization notch on the mating edge to prevent incorrect insertion. Figure 6-19 shows
the polarization notch on a DIMM.
Figure 6-19 DIMM Showing Polarization Notch
Remove DIMM
To remove a DIMM:
Step 1 Read the “Safety Warnings” section on page 6-2 section and disconnect the power supply before you
replace any module.
Step 2 Remove the chassis cover. See the “Remove and Replace the Chassis Cover” section on page 6-4.
Step 3 Locate the DIMM module. See the “Locate Internal and External Slots for Modules on Cisco 4451 ISR”
section on page 6-7 to find the DIMM sockets on the router.
1 Polarization notch
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Cisco 4221 ISR Specifications

General

Form Factor	Rack-mountable
WAN Ports	2
LAN Ports	2
RAM	4 GB
Flash Memory	4 GB
Product Type	Router
Total Number of Ports	4
Number of Network (RJ-45) Ports	4
Number of Total Expansion Slots	3
Expansion Slot Type	NIM, ISC
Number of NIM Slots	2
Number of ISC Slots	1
Manageable	Yes
Power Supply	Internal
Redundant Power Supply	No
Authentication Method	RADIUS, TACACS+
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Operating Temperature	32°F to 104°F (0°C to 40°C)
Height	1.75 in
Encryption Algorithm	AES, 3DES
Dimensions (W x D x H)	1.75 x 13.5 x 1.73 inches
Operating Humidity	5 to 95% (noncondensing)