The original device gifted to Humans by the Falinjorin that allows for inter-realm Transit. Unlike the Artikybahl Devices that came later, the Kybahl Device did not have the built in event horizons to contain the Voldeflus of Hubspace.
It was lost during The Collapse and later rediscovered.
In 2202 PC, the Kybahl Device was found in a complex of ruins, dating back over 9000 years, on a former human world (Earth).