  In this paper, I study the conditions imposed on a normal charged fluid so
that the causality and stability criteria hold for this fluid. I adopt the
newly developed General Frame (GF) notion in the relativistic hydrodynamics
framework which states that hydrodynamic frames have to be fixed after applying
the stability and causality conditions. To my purpose, I take a charged
conformal matter in the flat and $3+1$ dimension to analyze better these
conditions. The causality condition is applied by looking to the asymptotic
velocity of sound hydro modes at the large wave number limit and stability
conditions are imposed by looking to the imaginary parts of hydro modes as well
as the Routh-Hurwitz criteria. By fixing some of the transports, the suitable
spaces for other ones are derived. I have observed that in a dense medium with
finite $U(1)$ charged chemical potential $\mu_0$, negative values for
transports appear and the second law of thermodynamics has not ruled out the
existence of such values. Sign of scalar transports are not limited by any
constraints and just a combination of vector transports is limited by the
second law of thermodynamic. Also numerically it is proved that the most
favorable region for transports $\tilde{\gamma}_{1, 2}$, coefficients of the
dissipative terms of the current, is of negative values.
