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steve messenger
09-12-2000, 12:51 PM
I understand there are two types of 9 pin serial connection to motherboard cable. my SOYO SY-5VC motherboard has 10 pins on each com connector.
I need the wiring information for the D type 9pin panel connector to the 10 pin IDC motherboard connector.
I can not get the mouse to work.
can anyone please help

regards steve

Charles Kozierok
09-12-2000, 04:38 PM
I don't have the wiring handy, I need to look this up at some point. http://www.PCGuide.com/ubb/frown.gif
I do know that there are supposed to be only two different configurations. Try hunting around on the web, it's out there somewhere...

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Charles M. Kozierok
Webslave, The PC Guide (http://www.PCGuide.com)
Comprehensive PC Reference, Troubleshooting, Optimization and Buyer's Guides...
Note: Please reply to my forum postings here on the forums. Thanks.

der King Mongo
09-12-2000, 04:45 PM
Not that I know the answer--but the only 10-pin port you'll find on your motherboard would be for an RJ-45 (wide) network plug, which looks like a phonejack. Serial ports, aka com ports, are either DB9 or DB25, that's it. DB25 is ancient and you just plain won't see it anymore (they only used 9 pins anyway).

Where is this 10-pin port? Is it a port for peripheral use (i.e., once the motherboard is mounted, is the port available OUTSIDE of the case?), or is it directly on the motherboard, for some type of internal cable?

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***He who eats when he is full, digs his grave with his teeth***

newton's cat
09-12-2000, 11:51 PM
Originally posted by steve messenger:
I understand there are two types of 9 pin serial connection to motherboard cable. my SOYO SY-5VC motherboard has 10 pins on each com connector.
I need the wiring information for the D type 9pin panel connector to the 10 pin IDC motherboard connector.
I can not get the mouse to work.
can anyone please help

regards steve

I have a Soyo SY-5VA. I will have a look at the connection and get back to you. I have also read that Soyo boards ARE "different".

Have you got the manual? It's on the SOYO site if you haven't.
http://www.soyo.com > support > manuals

Newton's Cat

Paleo Pete
09-13-2000, 11:08 AM
The Hardware Book (http://www.sonic.net/~alanwall/hwb/hwb.html) is a great resource for looking up pinouts and cable diagrams.

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steve messenger
09-13-2000, 11:44 AM
thanks for all the help guys!
problem solved as follows.
d type connector pins are numbered across the plug, top row 1-5, lower row 6-9
idc connectors numbered up/down alternately so top row is 1.3.5.7.9 lower row is 2.4 6 8 10.
Type 1 cable is wired 1-1,2-2.3-3 etc., which is mechanically awkward but is the common standard.
Type 2 cable is wired mechanically more directly so:
d type/1 to idc/1
d type/6 to idc/2
d type/2 to idc/3
d type/7 to idc/4 and so on.
refer to the respective connector pin-outs and all will become clear.

not many motherboards use the type 2 cable and some "experts" deny it's existence.
i can confirm that fitting the wrong type will not harm the motherboard.
it is possible to determine a type 2 motherboard comm connector because pin 9 is connected to ground instead of pin 5.
perhaps this may be of help to someone else.

regards steve

Charles Kozierok
09-14-2000, 10:02 PM
Thanks Steve! I'm going to hang on to that for when I rewrite the motherboard section of the site.

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Charles M. Kozierok
Webslave, The PC Guide (http://www.PCGuide.com)
Comprehensive PC Reference, Troubleshooting, Optimization and Buyer's Guides...
Note: Please reply to my forum postings here on the forums. Thanks.