US Robotics Sportster ISA 56k modem<p><a href="http://www.recycledgoods.com/media/catalog/product/cache/1/image/0dc2d03fe217f8c83829496872af24a0/u/s/us-robotics-isa-modem-sportster-model-0467-dell-pn-00056678-83175001-1.39.jpg" rel="nofollow">http://www.recycledgoods.com/media/catalog/product/cache/1/i...</a>
I had pocketable computer, modem and a coupler. <a href="https://goo.gl/photos/oedTZeDQNxf5azsb7" rel="nofollow">https://goo.gl/photos/oedTZeDQNxf5azsb7</a><p>Yes the modem has XJACK. Other PCMCIA-modems had ugly proprietary connectors.
USR Courier 56K V.Everything (tm)<p>The thing which made my mind soar at the time was the fact at one could flash it to increase its capability from 28k to 33.6k to 56k.