Manual for P4N series
Installation Instructions
Communication and Networking Riser Interface Connector(CNR)
The mainboard provides this Communication and Networking Riser(CNR) interface which can
support audio and/or modem functions . Furthermore, it provides a LAN interface for network-
ing functions. What its superiority compared with AMR is being able to support plug-and-play
function. Mechanically the CNR shares a PCI slot, thus when you insert the CNR card, the
neighboring PCI slot cannot be used.
By using an audio codec, the AC97 digital link providing by CNR allows for cost-effective,
high-quality, integrated audio on the platform. AC97 digital link also allows two external
codecs to be connected to the ICH2. The digital link is expanded to support two audio
codecs for up to 6 channels of PCM audio output (full AC-3 decode) or a combination of an
audio and modem codec.
CNR Connector
