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DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch Hardware Installation Guide
NOTE: A qualified electri cian must perform all connections to DC power and to safety groun ds.
All electrical wiring must comply with applicable local, regional or national codes and practices.
CAUTION: Never defeat t he gro und conductor o r o perate th e e quipment in the ab sence of a
suitably installed ground conductor. Contact the appropriate electrical inspection authority or an
electrician if you are uncertain that suitable grounding is available.
CAUTION: The system chassis must be positively gr ounded to th e rack cabin et frame. Do not
attempt to conne ct powe r to the system until grounding cabl es are connected. A qualified
electrical inspector must inspect completed power and safety g round wiring. An energy hazard
will exist if the safety ground cable is omitted or disconnected.
Protecting Against Electrostatic Discharge
Static electri city can h arm delicate compon ents i nside y our system. To prevent static damag e, discharge stati c
electricity from your body before you touch any of the electronic components, such as the microprocessor. You can do
so by periodically touching an unpainted metal surface on the chassis.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
1. When unpacking a static-sensitive co mponent fro m its shipping carton, do not remove t he co mponent from
the antistati c packin g ma terial until yo u are ready to install t he comp onent in y our system. Ju st bef ore
unwrapping the antistatic packaging, be sure to discharge static electricity from your body.
2. When transporting a sensitive component, first place it in an antistatic container or packaging.
3. Handle all se nsitive components in a static-safe are a. If possible, use anti static floor pa ds, workbench pads
and an antistatic grounding strap.
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