Power supplies
The S4810–ON supports two hot-swappable power supply units (PSUs) with integrated fans that provide cooling for the system.
The S4810–ON supports AC power supplies with two air-flow directions (normal and reversed). Two PSUs are required for full
redundancy, but the system can operate with a single PSU.
NOTE:
If you use a single PSU, install a blank plate in the other PSU slot. Dell Technologies recommends using power
supply 2 (PSU2) as the blank plate slot.
The PSUs are field replaceable. When running with full redundancy (two power supplies installed and running), you can remove and
replace one PSU while the other PSU is running without disrupting traffic.
The power supply LED indicates the power supply status:
•
Off—no power
•
Solid Green—Power supply is present and working.
NOTE:
ESD damage can occur if components are mishandled. Always wear an ESD-preventive wrist or heel ground strap
when handling the S4810–ON and its components.
NOTE:
To prevent electrical shock, ensure that the S4810–ON is grounded properly. If you ground your equipment
incorrectly, excessive emissions may result. To ensure that the power cables meet your local electrical requirements,
use a qualified electrician.
Topics:
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Components
The following power supply options are available for the S4810–ON:
•
AC power supply with integrated fan
•
AC power supply with integrated reverse flow fan
Power supply 1 (PSU1) is on the left side of the chassis; power supply 2 (PSU2) is on the right side of the chassis.
The PSUs in the S4810–ON are field replaceable. When both power supplies are installed and running, you can remove one power supply
without interrupting traffic.
The PSUs are in a single piece with the PSU fans. You can replace the fan trays individually, but you cannot replace the fans that are
attached to the PSUs. If the fans attached to the PSU fail, you must replace the entire PSU. For fan tray replacement procedures, see
.
NOTE:
Prevent exposure and contact with hazardous voltages. Do not attempt to operate this system with the safety
cover removed.
CAUTION:
Remove the power cable from the PSU before removing the PSU. Also, do not connect the power cable
before you insert the PSU in the chassis.
NOTE:
To comply with the GR-1089 Lightning Criteria for Equipment Interfacing with AC Power Ports, use an external
SPD at the AC input of the router.
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Power supplies
