Dell P8189 manual Computer. Instead, perform an operating system shutdown

6USB 2.0 connectors (2) Use the front USB connectors for devices that you connect occasionally, such as flash memory keys or cameras, or for bootable USB devices (see system setup for more information on booting to a USB device).

		It is recommended that you use the back USB connectors for devices that typically
		remain connected, such as printers and keyboards.
7	power button	Press to turn on the computer.
		NOTE: The power button can also be used to wake the computer or to place it into a
		power-saving state. See "Power Management" for more information.
		NOTICE: To avoid losing data, do not use the power button to turn off the
		computer. Instead, perform an operating system shutdown.
8	power light	The power light illuminates and blinks or remains solid to indicate different states:
		• No light — The computer is turned off.
		• Steady green — The computer is in a normal operating state.
		• Blinking green — The computer is in a power-saving state.
		• Blinking or solid amber — See "Power Problems."
		To exit from a power-saving state, press the power button or use the keyboard or
		the mouse if it is configured as a wake device in the Windows Device Manager. For
		more information about sleep states and exiting from a power-saving state, see
		"Power Management."
		See "Diagnostic Lights" on page 37 for a description of light codes that can help
		you troubleshoot problems with your computer.
9	diagnostic lights (4)	Use the lights to help you troubleshoot a computer problem based on the
		diagnostic code. For more information, see "Diagnostic Lights" on page 37.
10	microphone connector	Use the microphone connector to attach a personal computer microphone for
		voice or musical input into a sound or telephony program.
11	headphone connector	Use the headphone connector to attach headphones.
12	network link light	The network link light is on when a good connection exists between a 10-Mbps,
		100-Mbps, or 1000-Mbps (or 1-Gbps) network and the computer.

Quick Reference Guide

23