Dell E21S001, R820 owner manual Other Information You May Need

Power Indicator	Condition
Pattern
Green	The handle/LED indicator lights green indicating that a valid power source is connected to the
	power supply and that the power supply is operational.
Flashing amber	Indicates a problem with the power supply.
	CAUTION: When correcting a power supply mismatch, replace only the power supply
	with the flashing indicator. Swapping the opposite power supply to make a matched pair
	can result in an error condition and unexpected system shutdown. To change from a High
	Output configuration to a Low Output configuration or vice versa, you must power down
	the system.
	CAUTION: AC power supplies support both 220 V and 110 V input voltages with the
	exception of Titanium power supplies, which support only 220 V. When two identical
	power supplies receive different input voltages, they can output different wattages, and
	trigger a mismatch.
	CAUTION: If two power supplies are used, they must be of the same type and have the
	same maximum output power.
	CAUTION: Combining AC and DC power supplies is not supported and triggers a
	mismatch.
Flashing green	When hot-adding a power supply, this indicates that the power supply is mismatched with the
	other power supply (in terms of efficiency, feature set, health status, and supported voltage).
	Replace the power supply that has the flashing indicator with a power supply that matches the
	capacity of the other installed power supply.

Other Information You May Need

WARNING: See the safety and regulatory information that shipped with your system. Warranty information may be included within this document or as a separate document.

•The Getting Started Guide provides an overview of setting up your system, and technical specifications. This document is available online at dell.com/support/manuals.

•The rack documentation included with your rack solution describes how to install your system into a rack, if required.

•Any media that ships with your system that provides documentation and tools for configuring and managing your system, including those pertaining to the operating system, system management software, system updates, and system components that you purchased with your system.

•For the full name of an abbreviation or acronym used in this document, see the Glossary at dell.com/support/ manuals.

NOTE: Always check for updates on dell.com/support/manuals and read the updates first because they often supersede information in other documents.

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