Lenovo 3000 C100 All-In-One - Manual (Page 10)

User Guide
1.4.3 Connect the mouse cable to the appropriate mouse
connector (USB connector).
1.4.4 If you have audio devices, attach them using the
following instructions:
1 2
Microphone Use this connector to attach a microphone (purchased separately)
to your computer when you want to record sound or if you use
speech-recognition software.
Headphone Use this connector to attach headphones (purchased separately)
to your computer when you want to listen to music or other
sounds without disturbing anyone.
1.4.5 If you have powered speakers with an adapter:
(This picture is only a sketch print, it does not show the actual figure of the speaker)
31039405_3000 C100_UG_EN_V1.0.in5 5 2009.8.4 5:04:32 PM