42
M
M
K
K
7
7
3
3
L
L
E
E
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
(Communication and Network Riser) is a riser card specification to replace the
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 (
) circuit
requires a different and separate circuit design, which is put on CNR card. This motherboard
implements sound CODEC on board (can be disabled in BIOS), but reserves CNR slot for the
option of modem function. Note that you can still use PCI modem card. And due to hardware
limitation, if the motherboard you purchased implements an optional Creative CT5880 Audio
Controller, then there will not be CNR expansion slot on your motherboard.
