M
X
3
S
-
U
/
M
X
3
S
M
X
3
S
-
U
/
M
X
3
S
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
P
-
U
P
-
U
o
n
n
e
c
t
o
r
o
n
n
e
c
t
o
r
MODEM-CN
44
O
n
l
i
n
e
M
a
n
u
a
l
O
n
l
i
n
e
M
a
n
u
a
l