Acer 1400 Series - Manual (Page 52)

Peripherals and options 42
English
Audio devices
Your computer offers built-in stereo speakers. See the section entitled
"Audio" for more information on these features. However, in addition
to the integrated devices, the two audio ports on the left side of the
unit enable you to connect external audio input and output devices.
You can plug an external microphone into your computer's
microphone-in jack. This offers the convenience of greater freedom of
movement, as well as improved audio input quality.
Connect headphones to the headphone jack for private listening and
improved audio output quality.
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