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D
X
3
4
R
-
U
D
X
3
4
R
-
U
M
o
d
e
m
A
u
d
i
o
C
M
o
d
e
m
A
u
d
i
o
C
This connector is used to connect Mono In/MIC Out cable from internal modem card to onboard sound circuit. The pin 1-2 is
Mono In, and the pin 3-4 is MIC Out. Please note that there is no standard for this kind of connector yet, only some internal
modem cards implement this connector.
MIC Out
GND
GND
Mono In
MODEM-CN
o
n
n
e
c
t
o
r
o
n
n
e
c
t
o
r
53
O
n
l
i
n
e
M
a
n
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a
l
O
n
l
i
n
e
M
a
n
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a
l
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Troubleshooting
