M
M
X
X
3
3
6
6
L
L
E
E
-
-
N
N
/
/
M
M
X
X
3
3
6
6
L
L
E
E
-
-
V
V
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
C
C
N
N
R
R
E
E
x
x
p
p
a
a
n
n
s
s
i
i
o
o
n
n
S
S
l
l
o
o
t
t
CNR
(Communication and Network Riser) is a riser card specification to replace the
AMR (Audio / Modem Riser)
that supports
V.90 analog modem, multi-channel 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.
35
