Front-to-Back Airflow | 36
Back-to-Front Airflow | 37
Do Not Mix AIR IN (AFI) and AIR OUT (AFO) Components in the Switch | 38
Positioning the Switch | 39
Fan Module Status | 39
EX4650 Power System | 40
AC Power Supply in EX4650 Switches | 40
AC Power Supply in EX4650 Switches | 40
DC Power Supply in EX4650 Switches | 41
Airflow Direction in Power Supplies | 42
AC Power Supply Specifications for EX4650 Switches | 43
AC Power Cord Specifications for EX4650 Switches | 44
AC Power Supply LEDs in EX4650 Switches | 46
DC Power Supply in EX4650 Switches | 47
Characteristics of a DC Power Supply | 48
DC Power Supply Airflow | 49
DC Power Supply in EX4650 Switches | 50
DC Power Supply in EX4650 Switches | 50
Airflow Direction in Power Supplies | 51
EX4650 DC Power Specifications | 53
DC Power Supply LEDs in EX4650 Switches | 53
Site Planning, Preparation, and Specifications
Site Preparation Checklist for EX4650 Switches | 57
EX4650 Site Guidelines and Requirements | 58
Environmental Requirements and Specifications for EX4650 Switches | 58
General Site Guidelines | 60
Site Electrical Wiring Guidelines | 60
Rack Requirements for EX4650 Switches | 61
Cabinet Requirements for EX4650 Switches | 62
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