Dell Alienware Area-51 ALX (Late 2009) - Manual (Page 20)

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CHAPTER 3: CONNECTING DEVICES
Connecting External Speakers
Your Alienware desktop has five integrated audio out connectors and one audio
in connector. The audio out connectors deliver quality sound and support 7.1
surround audio. You can connect the audio input connector from a home stereo
or speaker system for a heightened gaming and media experience.
NOTE: On computers with a sound card, use the connector on the card.
1 2 3
5 6 4
1 Side L/R surround connector — Connects to side L/R surround
speakers.
2 Rear L/R surround connector — Connects to rear L/R surround
speakers.
3 Center/subwoofer connector — Connects to a center speaker or
subwoofer.
4 Line-in connector — Connects to recording or playback devices such
as a microphone, cassette player, CD player, or VCR.
5 Front L/R line-out connector — Connects to front L/R speakers.
6 Microphone connector — Connects to a microphone for voice or audio
input into a sound or telephony program.