Gigabyte GA-7ZXE User Manual page 27

SPDIF:SPDIF (Optional)
Please note:
The SPDIF output is capable of providing digital audio to external speakers
or compressed AC3 data to an external Dolby Digital Decoder. Use this
feature only when your stereo system has digital output function.
PWR_FAN: Power Fan (Optional)
1
Pin No. Definition
1 VCC
2 SPDIF OUT
3 GND
1
Pin No. Definition
1 GND
2 +12V
3 NC
20
Connectors