Information on 64–bit operatingsystemsFor information on availability and compatibility of the Windowsand Linux 64–bit operating systems on HP workstations, visithttp://www.hp.com/go/wsos.Information on Linux and HP For information on using Linux on HP workstations, includingsolutions, products, and services, visit http://www.hp.com/linux/.Warnings and cautionsWARNING! Any surface or area of the equipment marked with this symbol indicates the presenceof a hot surface or hot component. If this surface is contacted, the potential for injury exists. To reducethe risk of injury from a hot component, enable the surface to cool before touching.WARNING! Any surface or area of the equipment marked with this symbol indicates the presenceof an electrical shock hazard. To reduce the risk of injury from electrical shock, do not open any enclosedarea marked with this symbol.WARNING! To reduce the risk of electric shock or damage to your equipment:— Do not disable the power cord grounding plug. The grounding plug is an important safety feature.— Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.— Disconnect power from the equipment by unplugging the power cord from the electrical outlet.WARNING! To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes properworkstation setup, posture, health, and work habits for computer users, and provides important electricaland mechanical safety information. This guide is located at http://www.hp.com/ergo and on thedocumentation CD (if one is included with the product).WARNING! If a product is shipped in packaging marked with this symbol, , the product must alwaysbe lifted by two persons to avoid personal injury due to product weight.CAUTION: Static electricity can damage the electronic components of the workstation. Beforebeginning these procedures, be sure you discharge static electricity by briefly touching a grounded metalobject.CAUTION: Observe the following cautions when removing or replacing a processor:— Installing a processor incorrectly can damage the system board. Contact an HP authorized reselleror service provider to install the processor. If you plan to install the processor yourself, read all of theinstructions carefully before you begin.— Failure to follow the workstation preparation instructions can result in an improperly installedprocessor, causing extensive workstation damage.— Processor socket pins are delicate and bend easily. Use extreme care when placing the processorin the socket.Table 1-5 Product updates (continued)6 Chapter 1 Locating HP resources ENWW