![]() Hard drive, 66 error messages, 29 I/O panel, 99 system, 18 memory, 78 warning, 27 optical drive, 60 microprocessor power supply, 94 removing, 81 processor, 83 replacing, 83 system battery, 89 troubleshooting, 129 system board, 103 mouse tape drive, 60 troubleshooting, 107 Integrated Devices screen, 35 navigation keys. (Device drivers are normally included with your operating system software or with the device itself.) See the documentation that accompanied the device for specific installation and configuration instructions. Most devices must be connected to a specific connector and device drivers must be installed before the device operates properly. ![]() Connecting External Devices When connecting external devices to your system, follow these guidelines. Back-Panel Features and Indicators voltage selection switch power connector USB connectors (5) NIC connector video connector serial connector I/O expansion-card slots (4) About Your System. Back-Panel Features and Indicators Figure 1-2 shows the controls, indicators, and connectors located on the system's back panel. ![]() ![]() NOTE: If you turn off the system using the power button and the system is running an ACPI-compliant operating system, the system performs a graceful shutdown before the power is turned off. Front-Panel Components (continued) Item Component Icon Description power button The power button controls the DC power supply output to the system. ![]()
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