Cisco 1721 - Manual (Page 69)

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Cisco 1721 Router Hardware Installation Guide
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A P P E N D I X
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Installing and Upgrading Memory and
Virtual Private Network Modules
This chapter tells how to install or upgrade memory and how to install a Virtual
Private Memory (VPN) module in your Cisco 1721 router and includes the
following sections:
• Safety Warnings
• Opening the Chassis
• Locating Modules
• Installing a DIMM
• Installing a VPN Module
• Closing the Chassis
Safety Warnings
Warning During this procedure, wear grounding wrist straps to avoid ESD damage to
the router. Do not directly touch the backplane with your hand or any metal
tool, or you could shock yourself.
Warning Only trained and qualified personnel should be allowed to install or replace
this equipment.