Lenovo 10069/7760 manual Microphone, Sound or if you use speech-recognition software, Headphone

1.5.4If you have audio devices, attach them using the following instructions:

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TV IN

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.
TV-Tuner connector	Only supported on systems with optional TV tuner card
(IEC type)	(Some models are equipped with this connector).
TV antenna	To connect the signal input cable for CATV (Some
connector (F type)	models are equipped with this connector).

1.5.5Connect any additional devices that you have. Your computer might not have all connectors shown.

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USB connector Use this connector to attach a device that requires a USB connection.

Network adapter	Use this connector to attach the computer to an
connector	ethernet-type local area network.

8User Guide