Comtrol Corp.
Comtrol Corporation is a woldwide supplier of high-performance asynchronous and synchronous serial connectivity products. These products include a wide array of buffered, intelligent and non-inteligent multiport serial controllers, and interface options for the PCI, ISA and Micro Channel plattforms. Developer toolkits are also avaible for custom-designed integration into Windows, Dos and UNIX applications.
  * Corresponds to categories with obsolete, but still available products

-RocketPort uPCI Interfaces EOL Announcement, Effective December, 2015. Get more info in the news section.