strange cable

Janina Sajka janina at
Fri Oct 22 11:36:52 EDT 2004

These are fairly rare cables, but not unknown. I have one for the
purpose of uploading software upgrades to a small telecomm device I
happen to have. It's just as you describe--standard mini-phone at one
end, and standard db9 at the other. In my case I attach it correctly and
run minicom. Don't know about your case, but I do know it's possible to
plug it into the wrong port though I doubt it will do anything harmful
for that.

Gregory Nowak writes:
> Hash: SHA1
> Hi all.
> I just found this strange cable here. One end is a standard 9-pin
> serial port connector, and the other end is what looks like a 1/8 inch
> standard headphone connector.
> Does anyone know what this is used for? I thought that it might be
> used to do backups onto a tape via a serial port maybe, but I didn't
> want to plug one end into a serial port, and the other end into a
> microphone jack of a tape player, and risk frying one or both
> devices. BTW, the serial port end does in fact plug into a serial port
> just fine, and the headphone end plugs into a headphone socket on a
> tape player, or any other device with a headphone jack just fine as
> well. Thanks.
> Greg
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				Janina Sajka, Chair
				Accessibility Workgroup
				Free Standards Group (FSG)

janina at	Phone: +1 202.494.7040

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