Acer Aspire Predator G7700 Series User Manual page 60

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• Analog speaker system — You can connect the front left and right speaker
to the headphone/line-out/front speaker jack (green jack), center speaker
or subwoofer to the center speaker/subwoofer jack (orange jack), rear left
and right speaker to the rear speaker jack (black jack), and side left and
right speaker to the side speaker/line-out jack (gray jack).
4 Using your desktop