Lenovo 10086, 3109, 4743 K430 manual Connecting your computer, Basic connector instructions

1.3 Connecting your computer

Note: Your computer may not have all of the connectors described in this section.

1.3.1Check the position of the voltage-selection switch on the rear of the computer. Use a ballpoint pen to slide the switch if necessary.

Note: Some computers do not have a voltage switch. These computers control voltage automatically.

•If the voltage supply range is 100-127 V AC, set the switch to 115 V.

•If the voltage supply range is 200-240 V AC, set the switch to 230 V.

115 230

1.3.2 Basic connector instructions

Connector	Description
Microphone	Use this connector to attach a microphone to your
	computer when you want to record sound or if you
	use speech-recognition software.
Headphone	Use this connector to attach headphones to your
	computer when you want to listen to music or
	other sounds without disturbing anyone.
Audio line-in connector	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.

6User Guide