• Reverse air flow — To ensure cool air intake and to avoid hot air blow out from the I/O panel, ensure
you have the necessary clearance.
• Reliable earthing — Maintain reliable earthing of rack-mounted equipment. Pay particular attention to
the supply connections other than the direct connections to the branch circuit; for example, the use
of the power strips.
• Do not mount the equipment with the Utility panel facing in the downward position.
NOTE: These instructions are a condensed reference. Read the safety instructions in your Safety,
Environmental, and Regulatory information booklet before you begin.
NOTE: The illustrations in this document are not intended to represent a specific switch.
Install the Dell ReadyRails System
Dell Networking provides the ReadyRails rack mounting system so you can easily configure a rack to
install the S4820T switch.
You can install the ReadyRails system using the 1U tool-less method or one of three possible 1U tooled
methods (two-post flush mount, two-post center mount, or four-post threaded).
Refer to the appropriate instructions for the mounting configuration you’re using:
Installing ReadyRails — Tool-less Method
Installing ReadyRails — Two-Post Flush-Mount Configuration
Installing ReadyRails — Two-Post Center-Mount Configuration
Installing ReadyRails — Four-Post Threaded Configuration
Install the Hardware
19