 For some setups two identical plugs need to be applied for achieving the full data rate.As of now the typical plug is U-shaped with a fine grid edge connector on each of the end strokes of the shape facing away from the viewer.The wide of the plugs determines how far away the plug-in cards need to be seated to the main board of the hosting computer system - a distance of for the placement of the card is commonly determined by the matching plug (known available plug widths are 3 to 5 and also depending on board type).