What Is Audio Modem Riser (AMR)?

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If you've ever wondered why your computer sounds like a robot or can't hold a phone call, it's probably because you're using an outdated motherboard. The audio modem riser (AMR) is a short riser expansion slot on the motherboard of certain Intel Pentium III and IV PCs. AMD Athlon and AMD Duron PCs and AMD Athlons and AMD Durons are equipped with an audio modem riser. An audio modem riser with an expansion board may provide an analog input/output (I/O) system for audio and modem functions. Intel introduced the AMR slot in 1998 to allow the inexpensively incorporating of unique sound cards and modems into a system. It's important to note that while AMRs were initially used for audio and modem functions, they can now be used for any analog device in your computer, including speakers and headsets! An AMR is a tiny riser board that sits directly on a motherboard. It is called a riser board because it rises above the motherboard instead of lying flat. An AMR has 46 connections arranged in two rows of 23 pins each. Analog I/O audio functions are employed, and a modem equipped with a codec chip is required to translate analog and digital signals. AMR, ACR, and CNR were all great technologies that helped us get where we are today. Now it's time for something new: the HDMR slot! The HDMR slot is a new technology that allows your computer to be as smart as you are. The HDMR slot can support v92 modem functions, which means that your computer can talk to any other device worldwide using high-speed data transfer. The HDMR slot also supports audio interfaces incorporated directly onto the motherboard. You no longer need to buy external sound cards. You can plug your speakers into your computer and start jamming out!

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