> At 12:25 -0500 on 07/03/03, John E. "Jay" Maass wrote:
>
> >Above represents, roughly, the serial port
> >on the back of my Macintosh Performa 636CD.
> >I notice that the third row of pins from
> >the top row are 4 in number. But the serial
> >cable I purchased for connecting a Macintosh
> >StyleWriter II has but three pins in that row.
>
> The extra pin is for +5V power, used by various Geoport devices.
> [...]
>
> the pickle
>
> FAQ <http://macfaq.org/index.shtml>
Actually, lest you think that you have a Geoport on your Performa 636, I
should point out that many Performas (including the "Road Apple" PPCs that
were based on the Quadra/LC/Performa 630-type design) had a 9th pin, but
did not have Geoports -- they came bundled with a special Global Village
external modem that used the 9th pin to draw its power, like a Geoport
adaptor, so you didn't need a power brick.
--
Over,
Jutso
http://pages.ripco.net/~jutso/
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