A backplane connector includes a number of conductive terminals, an insulating frame, a first metal shield and a second metal shield. The first metal shield and the second metal shield respectively include a first extension portion and a second extension portion. The conductive terminals include differential signal terminals, a first ground terminal and a second ground terminal. The first extension portion and the second extension portion in contact with the first ground terminal and the second ground terminal. As a result, a shielding space to enclose contact portions of the differential signal terminals is formed. This arrangement can provide better shielding for the differential signal terminals, reduce crosstalk, and improve the quality of signal transmission.