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GeoPort is a serial data system used on some models of the Apple Macintosh computer in the mid-1990s. It was a modified version of the serial port that was designed to offer higher performance and support for more complex devices, including modems and telephony devices.

The GeoPort technology aimed to replace dedicated hardware functions with software control, thus reducing the complexity and cost of attached devices. A key component of GeoPort was the GeoPort Telecom Adapter, which was a device that, when connected to the Mac and a telephone line, allowed the Mac to function as a telephone, answering machine, and fax machine.

However, the reliance on software processing for these tasks put an additional load on the Mac’s CPU, and performance was often less than ideal, particularly on slower systems. As a result, GeoPort was not widely adopted and was eventually phased out as Apple moved to other connectivity standards, including USB.

As of my knowledge cutoff in September 2021, GeoPort is considered a legacy technology and is not used in modern computing devices.

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