1-2 Main Unit devices such as air conditioners, fans and vacuum cleaners can cause damage to your computer data and/or to the computer itself. Look at your system and match the features and connectors with the illustrations in this chapter. Use the illustrations to help you identify the lights, switches, connectors and disk drive. Use the instructions to connect the monitor, keyboard and any optional peripherals to the system unit. All connectors are shaped so they fit only one way. Don't try to force a cable into a connector. Never connect or disconnect any equipment when the system power is on!
If you have a problem, always check the instructions before proceeding, especially the illustrations. Remember, you can cause damage by not following instructions. The main unit case contains the basic components that run your computer. The system motherboard, disk drives, power supply, and optional expansion boards are located in the main unit. The other parts of your computer system connect to the main unit by cables. Figure 1-1, the front panel, identifies system features such as the key lock and floppy disk drive. The left side panel, illustrated in Figure 1-2, shows the mouse port.
The rear panel, illustrated in Figure 1-3, shows you where the other parts of your system (for example, the monitor and keyboard) plug into the main unit. Main Unit