63 Chapter 5
SPDIF_OUT: SPDIF out header
This is an optional header that provides an SPDIF_OUT (Sony/Philips Digital Interface) output to digital
multimedia device through optical fiber or coaxial connector.
C_INTRUSION: Chassis detect header
This detects if the chassis cover has been removed. This function needs a chassis equipped with intrusion
detection switch and needs to be enabled in BIOS.
9 RI Ring Indicator
10 NC
No pin
Pin Signal Name Pin Signal Name
1 +5V 2 KEY
3 SPDIF 4 GND
Pin Signal Name
1 Caseopen me
2 GND
Pin Signal Name Function
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