Safety Instr uctions 7Use the following safety guidelines to protect yourself and your computer.For comfort and efficiency, observe the ergonomic guidelines provided in“Sitting Comfortably at Your Computer” in the Tell Me How help file.When Using Your ComputerCAUTION: Do not operate your computer with any cover(s)(including the computer cover, filler brackets, front-panel inserts,and so on) removed.• To help avoid damaging your computer, be sure that the voltageselection switch is set to match the AC power available at yourlocation:– 115 V/60 Hz in most of North and South America and some FarEastern countries such as South Korea and Taiwan– 100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan– 230 V/50 Hz in most of Europe, the Middle East, and the Far EastAlso be sure that your monitor and attached devices are electricallyrated to operate with the AC power available in your location.• To help prevent damage to your computer when disconnecting anetwork cable from your computer, first unplug the cable from thecomputer network connector and then from the network wall jack.When reconnecting a network cable to your computer, first plug thenetwork cable into the network wall jack and then into the computernetwork connector.• To help avoid possible damage to the system board, wait 5 secondsafter turning off the computer before disconnecting or connecting anon-USB device.4C381a00.book Page 7 Thursday, June 14, 2001 9:38 AM