By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. This revision provides means for the audio codec to supply parametric data about its analog interface much like Intel High Definition Audio. HD Audio is generally more capable. The matching connector on your case should be labelled accordingly, I know mine is labelled HD Audio. Post as a guest Name.

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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 Alcc then I’ll use AC97 connector.

The standard was used in motherboardsmodemsand sound cards. Retrieved from ” https: On HDA audio to the front and rear outputs comes from seperate outputs on the audio codec. Just to note, there’s a third kind of connector i came across, labelled azalia – which is a bundle of loose connectors.

They are usually small square chips with 48 pins pin QFP package.

I will be adding emphasis. In particular the handling of plugging in of front panel devices is different. By using this site, you agree to the Terms of Use and Privacy Policy.


Adding this as a comment in case someone comes across it. 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 ac9 wire. Post as a guest Name.

Realtek ALC AC97 Audio Driver A Driver – TechSpot

While the connectors may look identical, the pinouts are different and not really interchangeable. I’m currently setting up a older system in a new case i’ll be upgrading it in stages, and the old parts then go back into the old case ;pand i’m having a bit of confusion over which cable to use, and what the difference is.

The header on the system itself is marked ‘Audio’. This answers my question though, and gives me an idea what works. The aoc covers two types of component, and the “AC-link” digital interface between them:. AC97 is supported by most operating systems, such as Windows and Linux.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. On AC97 audio to the rear audio output was looped by the front audio output and plugging in a device to the front panel audio output would electrically disconnect the rear audio output from the audio source. The specification covers two types of component, and the “AC-link” digital interface between them: Every frame is subdivided in 13 slots.


There are loops of wire on the AC97 connectors which will make the rear output work but it won’t be switched by the front panel connectors like it would be with a proper AC97 front panel. Views Read Edit View history. Most users aren’t going to find that acceptable.

Lower sample rates such as For average home use, there shouldn’t really be a noticeable difference. Sign up or log in Sign up using Google.

This page was last edited on 13 Octoberat Computer motherboards often provide a connector to bring microphone and headphone signals to the computer’s front panel with standard color jack. From Wikipedia, the free encyclopedia. HD Audio is generally more capable.

Your particular front panel looks to me like it is primerally designed for HD audio motherboards but with a hack to give limited support for Ax97 boards. The correct one to use depends on your case. A minor part of those standards is a front-panel audio connector. The linked articles have more detail on that.