Audio Connectors; Auxiliary-Device (Pointing-Device) Connector - IBM IntelliStation Z Pro Type 6221 Hardware Maintenance Manual

The following illustration shows the locations of these connectors.
Power cord
connector
Mouse
Keyboard
USB 2
USB 1
Serial 1
Parallel
Serial 2
Ethernet
Line out (green)
Line in (blue)
Mic (pink)
IEEE 1394
(FireWire)
Video
The following sections describe these connectors.

Audio connectors

The audio connectors are used to connect external audio equipment to the
computer.
Line out (green)
Microphone
There are two microphone connectors, one on the front and one on the rear of the
computer. Connect a microphone to this connector to record sounds onto the hard
disk or to use speech recognition software.
Line in
There is one line-in connector on the rear of the computer. The computer receives
audio signals through this connector from an external audio device.
Line out
There are two line-out connectors, one on the front and one on the rear of the
computer. The computer sends audio signals through this connector to powered
speakers with built-in amplifiers, headphones, a multimedia keyboard, or the audio
line-in connector on a stereo system. The internal speaker in your computer is
disabled when any device is attached to either the front or rear line-out connector.
Connecting devices to the front line-out connector disables the rear line-out
connector.

Auxiliary-device (pointing-device) connector

There is one auxiliary-device connector on the rear of the computer. Use this
connector to connect a mouse or other pointing device. The following illustration
shows an auxiliary-device connector.
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IBM IntelliStation Z Pro Type 6221: Hardware Maintenance Manual
SCSI knockout
Line in (blue)
Mic (pink)
6 5
4 3
1
2