Cisco 4000 Series User Manual

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Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers
OL-32185-02
Chapter 5 Install and Upgrade Internal Modules and FRUs
Install and Remove DDR DIMMs on Cisco 4400 or 4300 Series ISRs
Step 3 Holding the two captive screws, slide the entire NIM unit out as shown in Figure 5-20.
Replace NIM-SSD or NIM-HDD
To replace the NIM-SSD or the NIM-HDD:
Step 1 Align the NIM-SSD carrier card to the router base.
Step 2 Use both hands to slide it back into the slot in the Cisco 4451-X ISR .
Step 3 Tighten the captive screws as shown in Figure 5-20.
Install and Remove DDR DIMMs on Cisco 4400 or 4300 Series
ISRs
To access the DIMMs, you must remove the chassis cover as described in the “Remove and Replace
Chassis Cover” section on page 5-4.
Caution Always wear an ESD-preventive wrist strap and ensure that it makes good contact with your skin when
you remove or install DIMMs. Connect the equipment end of the wrist strap to the metal part of the
chassis.
Caution Handle DIMMs by the edges only. DIMMs are ESD-sensitive components and can be damaged by
mishandling.
Note When you upgrade to the latest rommon image, the latest model of the Cisco 4451 ISR will support only
a single DIMM operation on the device by default.
Locate and Orient DIMM
See the “Locate Internal and External Slots for Modules on Cisco 4451 ISR” section on page 5-8 to find
DIMM connectors on the router.
1 Captive screws holding the NIM-SSD to the
router

Cisco 4000 Series Specifications

General

Brand	Cisco
Model	4000 Series
Category	Network Router
Language	English