This invention attempts to provide a method for producing a DNA chip which can be accomplished in simple steps at a low cost, and wherein use of the resulting DNA chip reduces loss of probes and sample substances in the washing step enabling efficient use of such probe and sample. According to the invention, it is provided that the connector holds a printed circuit board, the connector comprises contact pins for contacting a female connector matching the connector, said contact pins being pressed into the printed circuit board, contact forks which each clamp a conductor in the interior region of the housing are inserted into the printed circuit board. The length of each tip section is inversely proportional to the overall length of the shaft.