Two 750 W DC power supplies are available: model XN-DCPWR-750W-F (front-to-back airflow) and model XN-DCPWR-750W-R (back-to-front airflow). Both can connect to a –48 V power source.
The DC power connection at your facility must be made by a qualified electrician, following these instructions:
Warning
Always make sure that the DC circuit is de-energized before connecting or disconnecting the DC power cables on the DC power supply.
Caution
Provide proper connection and strain relief on the DC power cables in accordance with all local and national electrical codes.Power up to the switch, following the steps in Powering up the Switch.
Leave the ESD strap permanently connected to the rack, so that the strap is always available when you need to handle ESD-sensitive components.