The CNR specification is open to the industry. It was used to inexpensively integrate local area networks, modems and audio subsystems with personal computers. It supports broadband, multichannel audio, analog modem and Ethernet-based networking. CNR can also be expanded to meet the requirements of new technologies such as DSL. CNR is a scalable motherboard riser card and interface that supports audio, modem and network interfaces of core logic chipsets. CNR has the capability to minimize electrical noise interference by physically separating the noise-sensitive elements from the motherboard's communication system.