The audio/modem riser, also known as an AMR , is a riser expansion slot found
on the motherboards of some Pentium III, Pentium 4, Duron, and Athlon personal
computers. It was designed by Intel to interface with chipsets and provide analog
functionality, such as sound cards and modems, on an expansion card. Contents.
1 Technology; 2 See also; 3 References; 4 External links. Technology.
Physically, it has two rows of 23 pins, making 46 pins total. ... has been
superseded by the Advanced Communications Riser (ACR) and Intel's own
communications and networking ...