Actualy it has ASD. I know this because I
changed my differential this monday. The old as well
as the new diff have pipes from the haudraulic system
connected to them (they are for the ASD). Also when I searched to buy a new diff I went to a mercedes shop where they looked at my
old diff and confirmed that it had ASD (I check this
because they offered me two diffs - one with ASD
and the other without ASD). By the way my car is
a 1992 euro model.

Joreto
190e 2.5-16v