Aim SC808 User Manual page 16

HD Audio PCI-e V2.0
 The "Xear Audio Center" will appear as the below diagram. Please note the
Left icon may not show on screen if the daughter board or extension HDA
(from system case) are not connected.
Stereo Music Scenario (only install the SC808 main board)
Stereo Music with Microphone Input Scenario (install the SC808 main board
and connect the HD Audio cable from system case, parts of the system may
not offer this feature)
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