Complex sentence: The term "5250" now refers to the data stream itself; few physical 5250 terminals (with their bulky Twinax cables) still exist, although they are still used to provide a "connection of last resort," hard-wired to the host computer.
Split into simpler sentences: The term "5250" now refers to the data stream itself. Few physical 5250 terminals with their bulky twinax cables still exist, although they are still used to provide a "connection of last resort," hard-wired to the host computer.