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A
X
4
B
/
A
X
4
B
P
A
X
4
B
/
A
X
4
B
P
C
N
R
(
C
o
m
m
u
n
i
C
N
R
(
C
o
m
m
u
n
i
CNR
is a riser card specification to replace the
audio, and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be
implemented in main chipset and share CPU power. The analogy conversion (CODEC) circuit requires a different and separate
circuit design, which is put on CNR card. This motherboard implements sound CODEC on board, but reserve CNR slot for the
option of modem function. Note that you can still use PCI modem card.
r
o
r
o
c
a
t
i
o
n
a
n
d
N
e
t
w
c
a
t
i
o
n
a
n
d
N
e
t
w
AMR (Audio/Modem Riser)
o
r
k
R
i
s
e
r
)
E
x
p
a
o
r
k
R
i
s
e
r
)
E
x
p
a
that supports V.90 analog modem, multi-channel
46
O
n
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i
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e
O
n
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i
n
e
n
s
i
o
n
S
l
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o
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S
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M
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M
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Troubleshooting
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