Jet power P_J vs. the accretion power P_B (left) and the mass of the SMBH M_BH (right) for the sample of 27 objects, consisting of the 23 objects from BBC08 and Allen et al. (2006) with the addition of the four new measurements. The 10 sources belonging to the Virgo cluster are marked with red circles, while full circles indicate the four objects analyzed here. The solid lines represent the best-fit regressions for the whole sample.