iiiSafety InstructionsUse the following safety guidelines to ensure your own personal safety and to helpprotect your computer or storage system from potential damage.Notes, Notices, Cautions, and WarningsThroughout this guide, blocks of text may be accompanied by an icon and printed inbold type or in italic type. These blocks are notes, notices, cautions, and warnings,and they are used as follows:NOTE: A NOTE indicates important information that helps you make better use ofyour computer system.NOTICE: A NOTICE indicates either potential damage to hardware or lossof data and tells you how to avoid the problem.CAUTION: A CAUTION indicates a potentially hazardous situation which, ifnot avoided, may result in minor or moderate injury.WARNING: A WARNING indicates a potentially hazardous situation which,if not avoided, could result in death or serious bodily injury.Safety Caution and WarningsObserve the following caution and warnings while servicing this system:CAUTION: There is a danger of a new battery exploding if it is incorrectlyinstalled. Replace the battery only with the same or equivalent type recom-mended by the manufacturer. Discard used batteries according to themanufacturer’s instructions.WARNING: The power supplies in your computer or storage system mayproduce high voltages and energy hazards, which can cause bodily harm.Only trained service technicians are authorized to remove the computercovers and access any of the components inside the computer. This warningapplies to Dell PowerEdge 4xxx or higher servers and Dell PowerVault 2xxSstorage systems.