- Notes, cautions, and warnings
- About this guide
- S4100–ON Series switch
- Site preparations
- S4100–ON Series installation
- Power supplies
- Fans
- Management ports
- Specifications
- Chassis physical design
- IEEE standards
- Agency compliance
- USA Federal Communications Commission statement
- European Union EMC directive conformance statement
- Japan VCCI compliance for class A equipment
- Korean certification of compliance
- Safety standards and compliance agency certifications
- Electromagnetic compatibility
- Product recycling and disposal
- Dell EMC support
S4100–ON Series S4128F-ON, S4148F-ON, and S4148FE Installation Guide November 2017
Power supplies
The S4100–ON Series (S4128F-ON, S4148F-ON, and S4148FE-ON) switch ships with two AC or DC power supplies.
The power supplies have two air-flow directions, normal and reverse. Normal is from the I/O-side to the PSU-side. Reverse is from the PSU-side to the I/O-side.
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 switch 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: Connect the power supply to the appropriate branch circuit protection as defined by your local electrical codes and verify that the remote power source complies with the switch input power specifications.
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