Dell Alienware Area 51 (Late 2009) - Manual (Page 18)

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CHAPTER 2: GETTING TO KNOW YOUR DESKTOP
Top Panel Connectors
1
2
3
4
5
1 USB 2.0 connectors (3) — Connects to USB devices, such as a mouse,
keyboard, printer, external drive, or MP3 player.
2 eSATA connector — Connects to eSATA compatible storage devices
such as external hard drives or optical drives.
3 IEEE 1394 — Connects to high speed serial multimedia devices such as
digital video cameras.
4 Headphone connector — Connects to headphones.
NOTE: To connect to a powered speaker or sound system, use the audio out
connector or one of the S/PDIF connectors on the back of your computer.
5 Microphone connector — Connects to a microphone for voice or audio
input into a sound or telephony program.