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Post 8 of Apr 6, at 5: But in order to turn on the audio. Maybe they’ve condensed two separate entires with two choices each, into one entry with three choices since if the Controller is disabled, it doesn’t really matter what mode you select for the connector. While the connectors may look identical, the pinouts are different and not really interchangeable. From Wikipedia, the free encyclopedia. This apparently seems to be for systems with non standard HD audio implimentations.

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Azalla haven;t tried the digital out as I lack a case with audio jacks on it. That’ll be a good bit more expensive than a PCI card with comparable performance, but then mobile computing has never been ac7 cheap. Apr 6, at 5: However, as of [update]most audio hardware manufacturers did not implement the full specification, especially bit sampling resolution. An AC’97 dongle returns audio on pins 6 and 10 rather than a digital plug sensing signals.

In the AC’97 design, the audio output is always sent to the jack. Apr 21, at 2: By using this site, you agree to the Terms of Use and Privacy Policy. Do you have that option for both front and rear sound? High-definition television High-definition video Ultra-high-definition television. It is up to software whether to disable the rear panel audio output when a connector is plugged into the front panel output.

Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. In the HDA design, when the plug is not inserted, the codec sends the audio directly to the speakers the audio does not go out to the front panel and then loop back to the speakers. I repeat, this is what I understood of my poor investigation from the day I had the same doubt as you, but I can’t promise all it’s true.


HD Audio or AC97 connector – Which to use when, and what’s the difference? – Super User

The header on the system itself is marked ‘Audio’. The manual which covers several boards lists the Azalia pin-out in detail, then has the standard “Link pins and ” box which applies to the AC97 pinouts.

On the other hand HD audio cables have a wire and terminal connecttor lurking there, waiting silently in that cold dark hole poised and ready for the time when a naive unsuspecting pin 4 who isn’t even old enough to leave his motherboard slips into the High Definition Audio clutches of that extra wire.

Apr 2, at Incase your case only has HD connector but your board only has AC In short, Azalia is one of many references to high definition audio. What’s the difference between these cables, and when do i know what to use?

Do I use the AC’97, HD or Azalia Audio case plug?

Consequently, an HDA motherboard would not detect the presence of an AC’97 dongle with a disconnected pin 4. For average home use, there shouldn’t really be a noticeable difference. Home Help Search Login Register. Apr 7, at 5: Home Questions Tags Users Unanswered.



In particular the handling of plugging in of front panel devices is different. Share This Page Tweet. This is pre HD audio days. The case connector most of the time is an addon where you want the audio jack in the front of the computer or wherever the case mounts it.

HD Audio is generally more capable. In AC’97, pins 2 and 4 are audio ground, but pin 4 is often disconnected. AC’97 has been around for a long time and more or less was the certification of onboard audio or generic audio chipsets on a soundcard.

AZALIA or AC’97 – Tech Support Forum

I’m not sure of the exact different I assume that HD audio will gives better audio quality but I’ll always go for HD audio if the mainboard has it, if the mainboard only has AC97 then I’ll use AC97 connector. HD Audio azlia sense the presence of an audio dongle.

If you plug an AC97 front panel into a HDA motherboard then plugin detection will not work correctly, it may detect devices as not present when they are present and vice-versa and the exact results may depend on what audio is playing.

Just to note, there’s a third kind of connector i came across, labelled azalia – which is a bundle of loose connectors.