  We classify the N=4 supersymmetric AdS5 backgrounds that arise as solutions
of five-dimensional N=4 gauged supergravity. We express our results in terms of
the allowed embedding tensor components and identify the structure of the
associated gauge groups. We show that the moduli space of these AdS vacua is of
the form SU(1,m)/(U(1)x SU(m)) and discuss our results regarding
holographically dual N=2 SCFTs and their conformal manifolds.
