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TITLE
Power Macintosh: Modem Port Disabled w/Internal Modem Present
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Article ID:
Created:
Modified:
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18250
7/25/95
12/18/97
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TOPIC
I have noticed that the modem serial port is covered up with a piece of plastic on Macintosh Performa computers with PowerPC, and on many newer "consumer model" Power Macintosh systems. Why is this? Is it possible to uncover it and use it?
DISCUSSION
Certain Macintosh Performa systems with PowerPC, and Power Macintosh computers may have an internal modem installed in the communications slot. The presence of the internal modem disables the external modem port. Because this port is inactive, it is covered with a piece of plastic.
The following computers were bundled with an internal modem installed in the communications slot:
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Performa 52xx
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Performa 53xx
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Performa 62xx
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Performa 63xx
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Performa 64xx
The following computers may have an internal modem installed in the communications slot, depending upon the bundle configuration. Check to see if the card in the comm slot is an ethernet card instead of a modem card. (Look for a green LED near the ethernet port.)
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Power Macintosh 4400
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Power Macintosh/Performa 5400
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Power Macintosh 5500
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Power Macintosh/Performa 6360
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Power Macintosh/Performa 6400
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Power Macintosh 6500
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Power Macintosh G3
If you need to use the external modem port, the internal modem must be removed. Instructions for installing a card into the communications slot are included in the User's Guide. You can follow these instructions for removing the internal modem as well. Although such cards are typically user-installable, you may want to contact an Apple-authorized service provider for assistance with this procedure.
Warning:
Any damage caused by the addition or removal of the modem is not covered under the warranty.
Note:
Any Macintosh desktop computer which has a communications slot will also have the external modem port disabled if an internal modem is installed. However, the external modem port is available if a network card is installed in the communications slot. The following computers have a communications slot:
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57x family: LC 575, Performa 57x
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580 family: LC 580, Performa 580CD
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63x family: LC 630, Quadra 630, Performa 63x
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64x family: LC 640, Performa 64x
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5xxx family: 5xxx/xxx LC, Performa 5xxx
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62xx family: Performa 62xx
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Performa 6300
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Performa 6360
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64xx family: Power Macintosh 6400, Performa 6400
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Power Macintosh 6500
This article was published in the Information Alley on 26 April 1996.
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