IBM 2292 Hardware Maintenance Manual page 32

Serial connectors
Parallel connector
Ethernet connector
Microphone connector
Audio line out connector
Audio line in connector
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Hardware Maintenance Manual Types 2292, 2273, 6043, 6343, 6349, 6350, 6790, 6791, 6792, 6793, 6794, 6795, 6823, 6825
Used to attach an external modem, serial printer, or other
devices that use a 9-pin serial connector.
Used to attach a parallel printer, parallel scanner, or other
devices that use a 25-pin parallel connector.
Used to attach an Ethernet cable for a Local Area Network
(LAN).
Note: To operate the computer within FCC Class B limits, use
a category 5 Ethernet cable.
Used to attach a microphone to your computer when you
want to record voice or other sounds on the hard disk if you
use speech-recognition software.
Used to send audio signals from the computer to external
devices, such as powered stereo speakers (speakers with
built-in amplifiers), headphones, multimedia keyboards, or the
audio line in connector on a stereo system or other external
recording device.
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.