Safety warnings, A p p e n d i x – Cisco 1721 User Manual
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Cisco 1721 Router Hardware Installation Guide
78-13834-02
A P P E N D I X
C
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:
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•
•
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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.
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