Dell DCSM FlexBay drive, Headphone connector, Diagnostic lights, Power button, Power light, Vents

5	FlexBay drive	Can contain an optional floppy drive or optional Media Card
		Reader. For information on using the Media Card Reader, see
		"Using a Media Card Reader (Optional)" on page 22.
6	microphone connector	Use the microphone connector to attach a personal computer
		microphone for voice or musical input into a sound or
		telephony program.
		On computers with a sound card, the microphone connector is
		on the card.
7	headphone connector	Use the headphone connector to attach headphones and most
		kinds of speakers.
8	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 49.
9	hard-drive activity light	The hard drive activity light is on when the computer reads
		data from or writes data to the hard drive. The light might also
		be on when a device such as a CD player is operating.
10	power button,	Press the power button to turn on the computer. The light in
	power light	the center of this button indicates power state. See "Controls
		and Lights" on page 109 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.
11	USB 2.0 connectors (2)	Use the front USB connectors for devices that you connect
		occasionally, such as joysticks or cameras, or for bootable USB
		devices (see "System Setup Options" on page 112 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.
12	vents	For adequate cooling, do not block any of the vents.
		NOTICE: Ensure that there is a minimum of two inches of
		space between all vents and any object near these vents.

NOTICE: Keep the vent area clean and dust-free to ensure that the computer is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the computer.

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Setting Up and Using Your Computer