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idata
Community Manager
1,093 Views

Glowing Red Speaker Socket?

When my DQ77KB has booted i've just noticed that there is a bright red LED glowing at the back of the green audio output socket on the back panel?

Anybody else have this and is it normal as i can't find anything in the manual?

Thanks

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5 Replies
idata
Community Manager
52 Views

Bump

Anyone?

idata
Community Manager
52 Views

Hello icetea, that LED is normal and it is so that you can find the output jack easier. Its actually a nice feature unless you don't have anything plugged in and it is pointing in your direction at night.

 

Regards 

idata
Community Manager
52 Views

Just found this info from this link.

m3libra

 

Regret to inform you that Dan_Intel is misinformed. This is not his fault; the Technical Specifications document (3rd revision) does not have complete information on the audio capabilities of this board.

In fact, the DQ77KB does support S/PDIF audio output. The green speaker jack on the back of the board is a dual-function jack. In addition to serving as a 1/8-inch stereo analog audio jack, it is ALSO a Mini-TOSLINK plug.

You can see this for yourself by installing the latest Realtek Audio driver from Intel's website, selecting "Realtek Digital Audio" as your default playback device, and observing the red glow coming from this jack.

You will need a Mini-TOSLINK to normal TOSLINK adapter plug (these cost only a few dollars at Amazon or Fry's), or an optical audio cable that has a mini plug on one end and a normal plug on the other. Of course, you will also need an audio or home theater receiver that supports optical inputs.

I have verified that the S/PDIF output on the DQ77KB can produce 2-channel PCM and 5-channel Dolby Digital and DTS at 44.1, 48, and 96 kHz, with either 16- or 24-bit resolution. My Denon receiver does not support 192 kHz samples, so I haven't verified that.

As you probably know, S/PDIF does not support the newer Blu-Ray audio formats like Dolby HD, nor does it support more than 2 channels of PCM. This is a limitation of S/PDIF itself, not the board.

idata
Community Manager
52 Views

If it's the same as other dual-function jacks then the LED should go out when you plug in a standard analog audio jack such as the one that comes on most desktop speakers.

idata
Community Manager
52 Views

I'm running the board as a headless server so i don't have any speakers plugged in.

It doesn't bother me now i know what it is as i was only concerned it was some error light reflecting from the board.

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