  We study the collider phenomenology of non minimal universal extra
dimensional (nmUED) model in the context of the Large Hadron Collider at CERN.
nmUED is an incarnation of the Standard Model in $(4+1)$ space-time dimensions
compactified on an $\bf{S_1}/\bf{Z_2}$ orbifold supplemented with boundary
localized operators with unknown coefficients. These coefficients parametrize
the radiative corrections which are somehow arbitrary due to the lack of
knowledge of the cut-off scale of such effective theory. It is possible to tune
the masses and couplings of the Kaluza Klein (KK) excitations by tuning these
parameters. Two scenarios with different mass hierarchies among the
KK-excitations have been considered. A detailed study of production
cross-sections and different decay modes of KK-particles are also presented. We
calculate the correlated bounds on masses of KK-particles using the LHC $nl +
mj + E\!\!\!\!/_T$ data (in case of production of strongly interacting
particles) and $3l + E\!\!\!\!/_T$ data (in case of electroweak productions).
We work in a KK-parity conserving scenario where the lightest KK-particle is a
potential dark (DM) matter candidate. We use the additional constraints coming
from the observed DM relic density of the universe to identify the allowed
parameter space. The current status of a nmUED model in the light of DM direct
detection data is also examined. The present investigation reveals that
production and subsequent leptonic decays of KK-electroweak gauge bosons as
massive as 1 TeV, lead to observable trilepton signature with a luminosity of 1
ab$^{-1}$ which will be realized in near future.
