v Remove jewelry, such as bracelets, necklaces, rings, and loose-fitting wristwatches.v Remove items from your shirt pocket, such as pens and pencils, that could fallinto the server as you lean over it.v Avoid dropping any metallic objects, such as paper clips, hairpins, and screws,into the server.Handling static-sensitive devicesAttention: Static electricity can damage the server and other electronic devices.To avoid damage, keep static-sensitive devices in their static-protective packagesuntil you are ready to install them.To reduce the possibility of damage from electrostatic discharge, observe thefollowing precautions:v Limit your movement. Movement can cause static electricity to build up aroundyou.v The use of a grounding system is recommended. For example, wear anelectrostatic-discharge wrist strap, if one is available. Always use anelectrostatic-discharge wrist strap or other grounding system when you workinside the server with the power on.v Handle the device carefully, holding it by its edges or its frame.v Do not touch solder joints, pins, or exposed circuitry.v Do not leave the device where others can handle and damage it.v While the device is still in its static-protective package, touch it to an unpaintedmetal surface on the outside of the server for at least 2 seconds. This drainsstatic electricity from the package and from your body.v Remove the device from its package and install it directly into the server withoutsetting down the device. If it is necessary to set down the device, put it back intoits static-protective package. Do not place the device on the server cover or on ametal surface.v Take additional care when you handle devices during cold weather. Heatingreduces indoor humidity and increases static electricity.Removing the server coverImportant: Before you install optional hardware devices, make sure that the serveris working correctly. Start the server, and make sure that the operating systemstarts, or if an operating system is installed. If the server is not working correctly,see Chapter 5, “Solving problems,” on page 33 for diagnostic information.To remove the server cover, complete the following steps:1. Read the safety information that begins on page v and “Installation guidelines”on page 7.2. Remove the protective power-supply cover from the back of the server.Note: The server comes with this protective cover over both power-supplyopenings.Chapter 2. Installing optional devices 9