8 
Item Re
uirements
es  No 
Lightning protection 
•  The grounding cable of the chassis is grounded 
properly. 
•  The grounding terminal of the AC power receptacle is 
grounded properly. 
•  A port lightning arrester is installed. (Optional.) 
•  A power lightning arrester is installed. (Optional.) 
•  A signal lightning arrester is installed at the input end 
of an external signal cable. (Optional.) 
 
Electricity safety 
•  Install a UPS. 
•  In case of emergency during operation, switch off the 
external power switch. 
 
Workbench 
•  The workbench is stable. 
•  The workbench is grounded properly. 
 
Safety 
precautions 
•  The router is far away from any sources of heat or moisture.  
•  The emergency power switch in the equipment room is identified and 
accessible. 
 
Tools 
•  Installation accessories supplied with the router are ready. 
•  User-supplied tools are ready. 
 
Reference 
•  Documents shipped with the router are available. 
•  Online documents are available.