  We attribute deviations of the muon and electron magnetic moments from the
theoretical predictions to the presence of an additional $U(1)^\prime$
supersymmetric model. We interpret the discrepancies between the muon and
electron anomalous magnetic moments to be due to the presence of non-universal
$U(1)^\prime$ charges. In a minimally extended model, we show that requiring
both deviations to be satisfied imposes constraints on the spectrum of the
model, in particular on dark matter candidates and slepton masses and ordering.
Choosing three benchmarks with distinct dark matter features, we study
implications of the model at colliders, concentrating on variables that can
distinguish our non-universal scenario from other $U(1)^\prime$
implementations.
