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Figure2. Rear connector locations
1 Voltage-selection switch (some models)
9 Microphone connector
2 Power cord connector 10 Audio line-out connector
3 Serial port
11 Audio line-in connector
4 PS/2 keyboard and mouse connectors
(optional)
12 PCI Express x16 graphics card slot
5 VGA monitor connector (not applicable on
some models)
13 PCI Express x1 card slot
6 DisplayPort connector (not applicable on
some models)
14 PCI card slots (2)
7 USB connectors (6) 15 Optional serial port
8 Ethernet connector
Connector Description
Audio line-in connector
Used to receive audio signals from an external audio device, such as a stereo
system. When you attach an external audio device, a cable is connected between
the audio line-out connector of the device and the audio line-in connector of the
computer.
Audio line-out connector
Used to send audio signals from the computer to external devices, such as powered
stereo speakers (speakers with built-in ampliers), headphones, multimedia
keyboards, or the audio line-in connector on a stereo system or other external
recording device.
DisplayPort connector
Used to attach a high-performance monitor, a direct-drive monitor, or other devices
that use a DisplayPort connector.
8 ThinkCentre User Guide