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Thread: Asrock Fatality 990FX Killer Information on plug no 19 Audio




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    Default Asrock Fatality 990FX Killer Information on plug no 19 Audio

    Asrock Fatality 990FX Killer
    Can anyone provide me with chassis speaker connection. Plug 19 Which are the 2 output pins? Is it 3 and 4 or 1 and 4 or what else???
    If speaker output is 1 and 4 so does that mean pin 1 + 5 to Speaker all the time. So increase chance of shorts from 5 volt rail?
    Not good idea if that's the case.

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    Default Re: Asrock Fatality 990FX Killer Information on plug no 19 Audio

    Most all chassis speaker connectors are 4pin with the red and black at opposite sides, two holes separating them.

    The red is positive, the black negative. Please see pg23 of the online manual, "Chassis Speaker Header"
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    Default Re: Asrock Fatality 990FX Killer Information on plug no 19 Audio

    Quote Originally Posted by zamman View Post
    Asrock Fatality 990FX Killer
    Can anyone provide me with chassis speaker connection. Plug 19 Which are the 2 output pins? Is it 3 and 4 or 1 and 4 or what else???
    If speaker output is 1 and 4 so does that mean pin 1 + 5 to Speaker all the time. So increase chance of shorts from 5 volt rail?
    Not good idea if that's the case.
    This chassis speaker header is for the POST code beeps only, not for audio, right?

    Pins 1 and 4 are the actual connections, this from page 23 of your board's manual:

    Asrock Fatality 990FX Killer Information on plug no 19 Audio-990fx-chassis-speakere-png

    Why they call pin one +5V instead of just Plus is beyond me, and it does not always provide +5V to that terminal, since the little speaker would be making a non-stop tone if it did. If it takes 5V to make the tone it does, that is one insensitive little speaker.

    We get stuff like this when an engineer provides information to a non-technical manual writer, or things are lost in translation.

    My ASRock board has an identical header, and my four pin "chassis speaker" plugs into it and works fine, only beeps when it should.

    Pin 1 should be labeled '+' on you board, pin four '-', although when using a single speaker the plus and minus really make no difference. When two or more speakers are used for music, the plus and minus matter but only to keep all the speakers in phase.

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    Default Re: Asrock Fatality 990FX Killer Information on plug no 19 Audio

    Thanks for confirming I was going to try connecting to Pin 1 but saw +5 and thought 5 Volts might appear on speaker. And puff of smoke would emit from it.
    Manual on page 23 does not say Pin 1 and 4 are speaker.
    Only mentions pin 4 speaker in book.

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