Sony PCG-NV100 VAIO User Manual page 84

To connect external speakers
1.
Make sure that your speakers are designed for computer use.
2. Turn down the volume of the speakers.
3. Locate the Headphone
4.
Plug one end of the speaker cable (not supplied) into the Headphone
Connecting External Speakers to the Headphone Jack
See the manual that came with your speakers for more information on its installation and use.
jack on the left panel of the computer.
jack.
Page 84