Patent ID: 7108556

Claim:
A printed circuit board having a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected, the printed circuit board comprising: a plurality of vias extending from the first side to the second side with the vias providing first signal launches on the first side and second signal launches on the second side; the first signal launches are provided in a plurality of rows for electrically connecting to the contact ends of the first differential connector, with each row having first signal launches along a first line and first signal launches along a second line substantially parallel to the first line, and the first signal launches along the first and second lines are offset so that first signal launches along the first line and adjacent first signal launches along the second line correspond to differential pairs of the first differential connector; and the second signal launches are provided in a plurality of columns for electrically connecting to the contact ends of the second differential connector, with each column having second signal launches along a third line and second signal launches along a fourth line substantially parallel to the third line, and the second signal launches along the third and fourth lines are offset so that second signal launches along the third line and adjacent second signal launches along the fourth line correspond to differential pairs of the second differential connector.