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Cable Wiring

By Sprocket ·
On the back of a old motherboard I have a socket for the monitor, which also is labled as com2. Can I use a convertor to use this as a 9 pin com port. If so, what is the wiring/pin outs to convert the 15 pins to 9 pins?

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by ghimpe-- In reply to Cable Wiring

It sounds to me that the connector is a VGA connector, not a serial connecter like you intend to use it. A model of the mother board could help us identify the connector better.

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by Sprocket In reply to

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by TheChas In reply to Cable Wiring

Just how old is this motherboard?

If you have a standard 9 pin "D" connector labeled as both Monitor and COMM 2, I suspect that you have a pre PC motherboard. Or at least a board from some system other than an IBM style PC.

A number of older systems did use serial data terminal style monitors.
The old VAX systems are one example.

Another possibility is an industrial class PC designed to replace an older VAX or similar system.

I would be curious to know more about the specifics of your board.

Chas

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by Sprocket In reply to

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by willcomp In reply to Cable Wiring

Is port labeled on case rather than motherboard?

Older backplates were labeled Com1 and Com2 and an integrated video adapter used one of the "Com" port cutouts.

So I suspect you have an integrated video adapter rather than some exotic serial port and there is no way to turn it into a serial port.

Dalton

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by Sprocket In reply to

Thats what i thought, just wanted to check. Cheers

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by Sprocket In reply to Cable Wiring

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