Texas Instruments 4000M - Manual (Page 211)

Using the Portable
CD-ROM Docking System
Software has been pre-loaded on your hard drive that
configures your notebook for the microphone and
headphone. To plug in your microphone, insert the plug
into the Mic connector on the front of the Portable CD-ROM
Docking System. The headphones may be plugged in either
at the CD-ROM player (un-mixed sound) or at the portable
docking system (mixed sound)s.
Audio Input
You can plug in external audio sources through ports on
the Portable CD-ROM Docking System. External sources
may include:
❑ Musical instruments - Line in port
❑ Tape players - Line in port
❑ Mixers - Line in port
❑ Microphones - Microphone port
Microphone and headphone connections
12-10 Portable CD-ROM Docking System