Swansea City and Cambridge United have never previously met in the League Cup.
This is the first meeting between Swansea and Cambridge in any competition since April 2005, a 3-0 win for the Swans in League Two.
Swansea have won their last three League Cup games against League Two opposition by an aggregate score of 11-1.
Cambridge United haven’t reached the League Cup third round since the 1998-99 season.
Swansea’s Andre Ayew has scored five goals in his last five League Cup appearances.