A shielded connector assembly 10 comprises, a terminal block 16 containing electrical contacts 18, a conductive back shell 11, a cable 39 extending through a cable receiving opening 20 of the back shell 11 with corresponding conductors 38 of the cable 39 connected to corresponding contacts 18, a series of passages 32 extend through the terminal block 16, and a corresponding series of vanes 35, 36 on the back shell 11 extend into the passages 35, 36 to separate selected contacts 18 from other contacts 18 in the terminal block 16.