A circuit board for use in a modular electrical connector , the circuit board comprising: a first surface and an oppositely facing second surface ; signal pathways provided on the first surface , the signal pathways having signal pathway ends abutting a mounting end of the circuit board ; first ground pathways provided on the first surface , each of the first ground pathways positioned adjacent at least one of the signal pathways , the first ground pathways having first ground pathway ends abutting the mounting end of the circuit board ; one or more second ground pathways provided on the second surface , the one or more second ground pathways having second ground pathway ends abutting the mounting end of the circuit board ; wherein the positioning of the signal pathway ends abutting the mounting end , the positioning of the first ground pathway ends abutting the mounting end and the positioning of the second ground pathway ends abutting the mounting end reduces cross-talk between signal pairs, wherein the signal pathways have mating signal contact pads , signal traces and mounting signal contacts , the signal traces extend from proximate a mating end of the circuit board to abutting the mounting end of the circuit board , wherein the first ground pathways have first mating ground contact pads , first ground traces and first mounting ground contacts , the first ground traces extend from proximate the mating end to abutting the mounting end of the circuit board , and wherein the second ground pathways have second ground traces , the second ground traces extend to abut the mounting end of the circuit board , characterised in that the second ground traces extend from proximate and along an edge of the mating end of the circuit board . a first surface and an oppositely facing second surface ; signal pathways provided on the first surface , the signal pathways having signal pathway ends abutting a mounting end of the circuit board ; first ground pathways provided on the first surface , each of the first ground pathways positioned adjacent at least one of the signal pathways , the first ground pathways having first ground pathway ends abutting the mounting end of the circuit board ; one or more second ground pathways provided on the second surface , the one or more second ground pathways having second ground pathway ends abutting the mounting end of the circuit board ; wherein the positioning of the signal pathway ends abutting the mounting end , the positioning of the first ground pathway ends abutting the mounting end and the positioning of the second ground pathway ends abutting the mounting end reduces cross-talk between signal pairs, wherein the signal pathways have mating signal contact pads , signal traces and mounting signal contacts , the signal traces extend from proximate a mating end of the circuit board to abutting the mounting end of the circuit board , wherein the first ground pathways have first mating ground contact pads , first ground traces and first mounting ground contacts , the first ground traces extend from proximate the mating end to abutting the mounting end of the circuit board , and wherein the second ground pathways have second ground traces , the second ground traces extend to abut the mounting end of the circuit board , characterised in that the second ground traces extend from proximate and along an edge of the mating end of the circuit board . <EOS>