Dell 755 manual 166, No light The computer is turned off

7	power light	The power light illuminates and blinks or remains solid to indicate different
		operating 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 mode.
		• Blinking or solid amber — See "Power Problems" on page 339.
		To exit from a power-saving mode, 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 modes and exiting from a power-saving mode, see
		"Power Management for Windows XP and Windows Vista" on page 292.
		See "Dell Diagnostics" on page 353 for a description of light codes that can help
		you troubleshoot problems with your computer.
8	headphone connector	Use the headphone connector to attach headphones and most kinds of speakers.
9	microphone connector	Use the microphone connector to attach a microphone.
10	3.5-inch drive bay	Can contain an optional slimline floppy drive or optional media card reader.
11	5.25-inch drive bay	Can contain a slimline optical drive. Insert a CD or DVD (if supported) into this
		drive.

Back View

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6

1	card slots	Access connectors for any installed PCI cards, PCI Express cards, PS/2, eSATA,
		and so on.
2	back panel connectors	Plug serial, USB, and other devices into the appropriate connectors (see "Back
		Panel Connectors" on page 167).
3	power connector	Insert the power cable.

166

Small Form Factor Computer