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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Hardware Hacking > imac serial port??

imac serial port??
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Mac Enthusiast
Join Date: Sep 2000
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Nov 10, 2000, 12:45 AM
 
has anyone notice the little circle beside the moniter connection on older imacs? i have a 266 and the little port looks like you can install a serial port on it(there is soldering points and its labled serial)

so has anyone played with it yet or heard of it??
w3rd..
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Nov 17, 2000, 05:10 PM
 
Yeah, isn't that right next to the Imac's PCI slot?

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Nov 17, 2000, 07:06 PM
 
The only way I know of getting a serial port into an iMac was on a rev. A or B Bondi. There was a mezz card that included that and a SCSI port if I am not mistaken (was the manufacturer our defunct Microconversions? Correct me if I am wrong.). As for an actual serial port that can be soldered onto the mobo, I don't think that is possible. I have been inside my rev. D a few times and peeked around, noticing a slot for IrDA but never serial. The iMac was supposed to be a migration away from older, legacy style connectors (not to mention other things).
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Join Date: Aug 1999
Location: Apeldoorn, The Netherlands, Europe
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Nov 21, 2000, 11:26 AM
 
The little circle is not for a seral connection but for a ADB connector. In total about 6 parts need to be added to get a fully working ADB port.
This was described by a japanese person shortly after the release of the iMac. see:http://www.bekkoame.or.jp/~t-imai/imace1.html

     
Senior User
Join Date: Jul 2000
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Nov 21, 2000, 07:08 PM
 
There is absolutely *is* a way to get a serial port on an iMac (first generation)... in fact there's a product available for under $50 that does just this thing.
http://www.geethree.com/imac.html

Just as long as you're willing to give up that standard iMac modem that is.

Speed
     
Atoms
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Nov 22, 2000, 10:21 AM
 
The little serial port looking connection you see when opening the second-gen iMacs is actually the leftover port where the infared was from the Rev.A. This feature was removed from the later iMacs, but they didn't change the board.
     
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Nov 23, 2000, 08:41 AM
 
Atoms is absolutely right, I was wrong. I did not read the first post properly and thought smic meant the smal circle on the corner of the motherboard close to where there is a bit nibbled out of the board to make space for the modem connector. That one is for ADB.
The irDA port used the old serial connectors but the signals are not the same according to Apple... There used to be a card that would use this port to give iMac it's serial port back. it would allso give a video mirroring option.
     
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Dec 1, 2000, 05:56 PM
 
Griffin Technology <http://www.griffintechnology.com> makes something called the iPort for Bondi Blue iMacs. It plugs in to where your infrared connector is (I think) and installs in the mezzanine cover hole, but is not a true mezzanine card. Unknown if it disables the infrared port. Gives you a serial port and video out connector. I was intrigued, but like my iProRaid-TV card better. Wish there were a better way to install it, as I am having lots of trouble with my mini iDock from Micro Connectors (another way to get [two] serial ports; it plugs into a usb port.) My infrared control panel has never recognized my infrared receiver on the front of the iMac (even after my recent 'restore in place'), so I don't know if the iPort would work.

Val
     
   
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