Foxconn 648FX4MR-ES - Manual (Page 9)

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After you finish the setting of jumpers and connect correct cables, power on the
system and press during POST (Power On Self Test) to enter the BIOS Setup
Utility. Choose “Load Optimized Defaults” for recommended optimal performance.
Please make sure your system components are good enough for optimized defaults.
12. Power on and Load Optimized Defaults
Select this option
and press .
11. 5.1 Channel Audio Effects
The motherboard is equipped with the CODEC ALC655 chip, which provides supp-
ort for 6-channel audio output, including 2 front, 2 rear, 1 center and 1 subwoofer
channel. ALC655 allows the board to attach 4 or 6 speakers for a better surround
sound effect. To apply this function, you have to install the audio driver in utility CD as
well as an audio application supporting 5.1 Channel. The illustration shown below
represents the standard location of all speakers in 5.1 Channel sound track. Connect
the front speaker to the green audio output; connect the surround sound speaker to
the blue audio input and connect the center speaker/subwoofer to the red microphone
input.
Blue
Front Left Front Right
Rear Left Rear Right
Subwoofer
Center
Green
Red