Cisco 3600 Series Upgrade Instructions

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Upgrading System Memory in Cisco 3700 Series Routers
OL-5423-02
Upgrading System Memory in Cisco 3745 Routers
Figure 8 Removing the Mainboard Tray from a Cisco 3745 Router
Caution The mainboard is an ESD-sensitive component. To avoid damage, observe all ESD precautions.
Step 8 When you are ready to replace the mainboard tray, see the “Replacing the Cisco 3745 Mainboard”
section on page 24.
Replacing Cisco 3745 SDRAM
SDRAM SODIMM Location and Orientation
The Cisco 3745 router mainboard includes one SODIMM socket, that supports two SDRAM SODIMMs
one on top of the other. You must remove the top SODIMM to gain access to the one on the bottom.
Figure 9 shows the location of dynamic memory—that is, SDRAM SODIMMs—in the Cisco 3745
router.
Caution To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid damaging the
underlying mainboard, do not use excessive force when you remove or replace SODIMMs.
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Cisco 3600 Series Specifications

General

Operating System	Cisco IOS
Series	3600
Type	Modular Router
Interfaces	Ethernet, Fast Ethernet, Serial, ISDN
Routing Protocols	RIP, OSPF, EIGRP, BGP, IS-IS
Redundancy	Optional redundant power supply
Management	CLI, SNMP, Telnet
Weight	Varies depending on the specific model
Power Supply	AC or DC, optional redundant power supply