3com 3C886 사용자 설명서

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Be sure nothing rests on the unit’s system cables and that the cables are not located where 
they can be stepped on and cause damage to the unit.
 
 
Keep the unit away from radiators and heat sources. Allow 1 inch (25mm) around the unit 
to provide adequate air circulation.
 
 
Install the unit in a clean area that is free from dust or extreme temperatures.
 
 
Allow a clearance gap of at least a 6 inches (150 mm) from the rear panel of the unit, to 
allow for cable access.
 
 
Interconnecting directly, or by way of other apparatus, to ports complying with SELV 
requirements may produce hazardous conditions on the network. Advice should be sought 
from a competent engineer before such a connection is made.