Microsoft Xbox 360 Manuel D'utilisation page 7

ConnecttheHdmiaVCable
To connect to your high definition TV:
Turn off your console.
1
If another AV cable (such as the component
2
HD AV cable) is already connected to your
console's AV port, disconnect it before
continuing.
Connect the HDMI AV cable connector to
3
the HDMI AV port (not the standard AV
port) on the console.
Connect the other end of the HDMI AV
4
cable to the HDMI input on your TV.
Turn on your console. From the System
5
area, select the appropriate high definition
video setting for your TV.
6
ConnecttoaStereoaudioSystem
withtheHdmiCable
HDMI supports audio through your TV.
However, you might prefer to connect Xbox
360 audio to a different audio system, such as
a stereo receiver or amplifier. To do so,
connect the HDMI AV cable for video and the
included audio adapter cable for audio.