30 pin IDC connector, not IDE, Floppy, COM or LPT \ VOGONS

30 pin IDC connector, not IDE, Floppy, COM or LPT

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First post, by AidanExamineer

Posted on 2014-09-25, 23:50

AidanExamineer Offline

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I've got a Slot 1 motherboard, I think it's from a Compaq originally (Apollo w/ VIA Chipset?), with a 30-pin IDC socket, alongside 2 IDE 40 pin, 1 floppy 34 pin, and a 26 pin LPT.

Is this some kind of proprietary thing? I even ran it past the veterans at work and they hadn't heard of or seen it before. I Googled the hell out of it too, and I can find listings for 30 pin ribbon cables, but no information as to what it connects with. It's keyed (29 pins in two rows of 15) and has a notch for a keyed cable.

Any ideas?

Reply 1 of 6, by Stojke

Posted on 2014-09-25, 23:59

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If you mean something like that connector below the SLOT 1 on this image:

Probably that ATi interface cable or something like that (cant remember now).

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Reply 2 of 6, by AidanExamineer

Posted on 2014-09-26, 00:46

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It's kind of hard from the low resolution, but that connector looks a bit longer than the one I'm seeing. Is that not a SCSI connector? It looks longer than the 34 pin floppy connector in the same photo.

Reply 3 of 6, by RacoonRider

Posted on 2014-09-26, 02:21

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VGA feature connector? Just a wild guess.

Reply 4 of 6, by pewpewpew

Posted on 2014-09-26, 03:41

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This thing? Item 23?
http://www.elhvb.com/mobokive/archive/Compaq/ … ub/jumpers.html

Reply 5 of 6, by AidanExamineer

Posted on 2014-09-26, 04:43

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pewpewpew wrote:
This thing? Item 23?
http://www.elhvb.com/mobokive/archive/Compaq/ … ub/jumpers.html

YEEEEEESSSS! Phew! Thanks! Figured it had to be some proprietary thing, and sure enough: Compaq!

Reply 6 of 6, by shamino

Posted on 2014-09-27, 13:20

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I can't blame the PC manufacturers for using a ribbon cable for their front panel connections. It's a big improvement really. The standard ATX way of connecting those things is pretty ridiculous, and I bet it causes some end-user problems when something gets unplugged.
What I do hate though, is when they don't document what that ribbon connector's pinout is.

I wish ATX defined a standard pinout for that stuff, so we could all have a single connector for it. It's definitely a shortcoming.

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