User`s manual

Installation
Page 3-14
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VCC
NC
GND
SPDIF_IN
SPDIF_OUT
SPDIF: Sony/Philips Digital Interface
This connector is the digital link
between the mainboard and your audio
devices, such as CD player, sampler or
DAT recorder. It allows the digital
transmission of audio data in SPDIF
format.
1394-1 / 1394-2: (Optional )
400Mbps 1394a (FireWire) Connectors
1394-1 and 1394-2 enable you to connect two
IEEE 1394 ports for use with external devices
that conform to the IEEE 1394 specification.
1394-1 1394-2
LED1: 80 Port Debug LED
80 port Debug 7-segment LED
display (Refer to Appendix E for
POST codes)