Updated: 11/13/2018 by Computer Hope

Short for communication and network riser, CNR is a specification that supports Audio, Modem, USB (universal serial bus), and LAN (local area network) interfaces of core logic chipsets. CNR slot technology was introduced by Intel on February 7, 2000. It was mainly developed by leading hardware and software developers who helped release the AMR (audio/modem riser) slot. The picture below is an example of a CNR slot, which is labeled as "CNR_SLOT" on this motherboard.

CNR slot

Today, this slot is no longer found on motherboards and was replaced with PCI (peripheral component interconnect) only motherboards and motherboards with PCIe (PCI Express).

Bus, Computer acronyms, Expansion slot, Hardware terms, Motherboard terms