Hardware Secrets
Home | Camera | Case | CE | Cooling | CPU | Input | Memory | Mobile | Motherboard | Networking | Power | Storage | Video | Other
Content
Articles
Editorial
First Look
Gabriel’s Blog
News
Reviews
Tutorials
Main Menu
About Us
Awarded Products
Compare Prices
Datasheets
Dictionary
Download
Drivers
Facebook
Forums
Links
Manufacturer Finder
Newsletter
On The Web
RSS Feed
Test Your Skills
Twitter
Newsletter
Subscribe today!
Search



Recommended
The Winn L. Rosch Hardware Bible, 6th Edition
The Winn L. Rosch Hardware Bible, 6th Edition, by Winn L Rosch (Que), starting at $0.10
Home » Motherboard » Bus
AMR, CNR and ACR slots
Author: Gabriel Torres
Type: Tutorials Last Updated: October 23, 2004
Page: 1 of 4
Real-time pricing for Standard HN17.
Standard Ignition HN17 Hrn Acr/Amr/Aud/Bmw/Chr Automotive Usually ships in 24 hours
Amazon: $30.31

Introduction

AMR (Audio Modem Riser), CNR (Communications and Network Riser) and ACR (Advanced Communications Riser) are slots that you can find on your motherboard that have the same goal: to install HSP (Host Signal Processing) devices to your PC. These devices can be modems, sound cards and network cards.

HSP devices lack self-control, it is the computer CPU that controls the device. As a result, the device is fairly cheap, because it doesn't have any fancy circuitry. But, on the other hand, the PC loses a little bit of its performance, since the processor will waste a little bit of its time controlling the device. This kind of device is also commonly refered as "software-controlled" (e.g., "soft modems").

Usually AMR, CNR and ACR devices are offered by the motherboard manufacturer as an option to the motherboard. For example, your motherboard can have a AMR modem as an option. You can also buy such devices on the market. An AMR modem costs USD 15 or less, but they are not so easy to find.

You will only find one of these slots at a time, i.e., if a motherboard has AMR slot, you won't find a CNR nor an ACR slot on it.

Let's take a look at the physical differences between these slots.

Page 1 of 4  | Next »
Print Version | Send to Friend | Bookmark Article | Comments (0)

Related Content
  • How On-Board Audio Works
  • Small Details on Motherboards
  • Information on ”Unbranded” Cards
  • ECS Factory Tour in ShenZhen, China
  • Gigabyte 890FXA-UD7 Motherboard

  • Recommended Deal.
    StarTech PCIUSB7StarTech PCIUSB7

    StarTech.com 7 Port PCI USB Card Adapter PCIUSB7 STARTECH.COM AZDH-PCIUSB7 Electronics Used and New Usually ships in 24 hours

    Amazon: $15.80 TigerDirect: $14.99
    Newegg: $17.99 Buy.com: $15.80

    RSSLatest News
    Intel Intros New Intel Xeon Processors
    May 15, 2012 - 5:04 PM PST
    Transcend Launches mSATA SSD Drives
    May 11, 2012 - 8:56 AM PST
    NVIDIA Launches GeForce GTX 670
    May 10, 2012 - 7:44 AM PST
    Corsair Adds PC Fans to Product Line
    May 4, 2012 - 9:05 AM PST
    iBUYPOWER Facebook Giveaway
    May 4, 2012 - 8:58 AM PST
    .:: More News ::.




    © 2004-12, Hardware Secrets, LLC. All rights reserved.
    Advertising | Legal Information | Privacy Policy
    All times are Pacific Standard Time (PST, GMT -08:00)