Asus K8N8X-LA User Manual page 16

9. Front panel audio connector (10-1 pin FRONT_AUDIO)
This is an interface for the Intel front panel audio cable that allow convenient
connection and control of audio devices.
By default, the pins labeled LINE_OUT_R/BLINE_OUT_R and the pins
LINE_OUT_L/BLINE_OUT_L are shorted with jumper caps. Remove the caps
only when you are connecting the front panel audio cable.
K8N8X-LA
K8N8X-LA Front Panel Audio Connector
10. Digital audio connector (3-pin SPDIF)
This connector is for an S/PDIF audio module that allows digital instead of
analog sound output. Connect one end of the audio cable to this connector and
the other end to the S/PDIF module.
K8N8X-LA
K8N8X-LA Digital Audio Interface
12 ASUS K8N8X-LA (Dom) Motherboard
FRONT_AUDIO
SPDI/F