Allied Telesis AT-MC1008/SP - Manual (Page 34)

Chapter 2: Installing the Media Converter
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Caution: Installation of the equipment in a rack should be such
that the amount of air flow required for safe operation of the
equipment is not compromised. 
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Warning
Warning: Reliable earthing of rack-mounted equipment should be
maintained. Particular attention should be given to supply
connections other than direct connections to the branch circuits
(e.g., use of power strips). 
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