BenQ Joybook S73V Series User Manual page 10

Connect digital camcorders and high-speed storage equipment to this
IEEE 1394 (FireWire) Port.
Connect USB peripherals to the USB port of your Joybook.
6 Getting started
Output video images on your Joybook to a TV or AV device that has an S-
Video Input socket by connecting it to the S-Video Out socket on your
Joybook.
Unless you intend to use the sound reproduction output of the built-in
Joybook speakers, you will also need to separately connect the Joybook
audio output socket to an appropriate sound reproduction device.