Cable Details:  (Pin numbers rearranged to simplify drawing)

  To original  To original  Eavesdropper system
  cable end    computer     Port 1       Port 2

   DB-9          DB-9         DB-9        DB-9
   MALE         FEMALE       FEMALE      FEMALE
     9------------9            9           9
     8------------8            8           8
     7------------7            7           7
     6------------6            6           6
     5------------5------------5-----------5
     4------------4            4           4
     1------------1            1           1
     2--------*---2       +----2      +----2
     3-----*------3       |    3      |    3
           |  |           |           |
           |  +-----------+           |
           +--------------------------+