Connecting An External Microphone - Lenovo 3000 G430 User Manual

Chapter 3. Using External Devices
This specification limits the computer's maximum wide band true RMS output
voltage to 150 mV. To help protect against hearing loss, ensure that the
headphones or earphones you use also comply with EN 50332-2 (Clause 7
limits) for a wide band characteristic voltage of 75 mV. Using headphones that
do not comply with EN 50332-2 can be dangerous due to excessive sound
pressure levels.

Connecting an External Microphone

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Your computer comes with an external microphone jack for connecting an
external microphone.
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