an electrical connector assembly includes a first connector and a second connector . the first connector includes a first conductive body including a first mounting face , a plurality of first contacts , a plurality of first shielding members , and a plurality first insulator . the second connector includes a second conductive body for being mated with the first conductive body and including a second mounting face , a plurality of second contacts and mated with the first contacts , a plurality of second shielding members , and a plurality second insulator . a total transmitting traces of the first contacts and the second contacts between the first mating face and the second mating face are circumferentially fully shielded .