Dell Alienware Area 51 (Late 2009) - Manual (Page 16)

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CHAPTER 2: GETTING TO KNOW YOUR DESKTOP
1 PS/2 Keyboard connector — Connects to a standard PS/2 keyboard.
2 Optical S/PDIF connector — Connects to amplifiers, speakers, or TVs
for digital audio output through optical digital cables. This format carries
an audio signal without going through an analog audio conversion process.
3 USB 2.0 connectors (6) — Connects to USB devices, such as a mouse,
keyboard, printer, external drive, or MP3 player.
4 eSATA connector — Connects to eSATA compatible storage devices
such as external hard drives or optical drives.
5 Audio connectors — Connects to speakers, microphone, and headphones.
NOTE: For information on audio connectors, see “Connecting External
Speakers” on page 20.
6 Network connectors (2) — Connects your computer to a network or
broadband device.
7 IEEE 1394 connector — Connects to high-speed serial multimedia
devices such as digital video cameras.
8 Coaxial S/PDIF connector — Connects to amplifiers, speakers, or TVs
for digital audio output through coaxial digital cables. This format carries
an audio signal without going through an analog audio conversion process.
9 PS/2 Mouse connector — Connects to a standard PS/2 mouse.
Back Panel Connectors
9
8
6
4
3
1
5
2
7