Dell EMC PowerSwitch S3048-ON Installation Guide June 2021

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Power supplies

The S3048–ON ships with one AC power supply. Dell EMC recommends purchasing a second power supply.

The S3048–ON supports AC power supplies with two air-flow directions—from the I/O side to the PSU side and from the PSU side to the I/O side. Two PSUs are required for full redundancy, but the switch can operate with a single PSU.

The PSUs are field replaceable. When running with full redundancy—two power supplies installed and running, you can remove and replace one PSU without disrupting traffic.

CAUTION To prevent electrical shock, ensure that the S3048-ON is grounded properly. If you do not ground your equipment correctly, excessive emissions may result. Use a qualified electrician to ensure that the power cables meet your local electrical requirements.
NOTE If you use a single PSU, install a blank plate in the other PSU slot. Dell EMC recommends using power supply 2 (PSU2) as the blank plate slot. Use a #1 Philips screw driver to install the blank plate.
NOTE ESD damage can occur if components are mishandled. Always wear an ESD-preventive wrist or heel ground strap when handling the S3048–ON and its components.

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