5 Power Supplies........................................................................................................29
Important Points to Remember..........................................................................................................29
Installing AC or DC Power Supplies................................................................................................... 30
Replacing an AC or DC Power Supply................................................................................................31
Connecting a DC Power Supply to the Power Source...................................................................... 31
6 Install Fans................................................................................................................35
Installing a Fan Module....................................................................................................................... 36
Replacing a Fan Module......................................................................................................................36
7 Supply Power and Power Up the System..........................................................37
8 Connecting the Stacking Ports (Optional).......................................................39
Important Points to Remember..........................................................................................................39
Connecting Two S4820T Systems.....................................................................................................40
Connecting Three S4820T Systems................................................................................................... 41
Hot-Swap Units in a Stack.................................................................................................................. 42
9 Console Ports.......................................................................................................... 45
Accessing the RJ-45 Console Port (RS-232).....................................................................................45
Default Configuration......................................................................................................................... 46
10 Technical Specifications.....................................................................................47
IEEE Standards.....................................................................................................................................48
11 Agency Compliance..............................................................................................51
Network Equipment Building Systems (NEBS) Compliance.............................................................. 51
USA Federal Communications Commission (FCC) Statement..........................................................51
Canadian Department of Communication Statement...................................................................... 52
European Union EMC Directive Conformance Statement................................................................52
European Community Contact.................................................................................................... 52
Japan: VCCI Compliance for Class A Equipment..............................................................................52
Korean Certification of Compliance...................................................................................................53
Safety Standards and Compliance Agency Certifications................................................................. 53
Electromagnetic Compatibility (EMC)................................................................................................54
Product Recycling and Disposal.........................................................................................................54
12 Technical Support.................................................................................................57
The iSupport Website.......................................................................................................................... 57
Accessing iSupport Services..........................................................................................................57
Contacting the Technical Assistance Center.....................................................................................57
Requesting a Hardware Replacement................................................................................................59
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