Acer Veriton M490G Service Manual page 71

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Pin
9
10
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.
Pin
1
+5V
3
SPDIF
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.
63
Signal Name
RI
NC
Signal Name
Pin
1
Caseopen me
2
GND
Function
Ring Indicator
No pin
Pin
2
KEY
4
GND
Signal Name
Signal Name
Chapter 5

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