HP Desktop Computer - Manual (Page 16)

12 Getting Started (features vary by model)
Connecting the TV signal source with a set-top box and using S-video or
composite video cable to the computer
To use video output from the set-top box (F),
add the cables to route video and audio to the
computer:
Do not detach any cables from the
existing setup.
Connect an S-video cable (or you can
use an S-video-to-composite cable
adapter) to the S-Video In connector (H)
on the computer.
Connect audio cables to the audio right
(red) and left (white) connectors (J) on
the computer.
Connect the remote control cable/IR
blaster (select models only) (G) to the
IR OUT connector on the computer, and
then position the blaster on the set-top
box. This enables the computer to
change the channel on the box. See
“Using an infrared receiver (IR) blaster”
on page 13 for blaster placement
details.