Intermediate adapter connector and connector assembly

An electrical connector assembly comprising:

• a first connector configured to mount on a first circuit board;
• a second connector configured to mount on a second circuit board;
• and
• an intermediate adapter connector configured to mate with the first connector and the second connector to electrically connect the first connector and the second connector, the intermediate adapter connector comprising:
• a first mating port configured to mate with the first connector;
• a second mating port configured to mate with the second connector;
• a plurality of insulating spacers;
• and
• a plurality of terminal modules alternately arranged and stacked with the plurality of insulating spacers in a first direction, such that each terminal module being positioned between two adjacent insulating spacers;
• each terminal module comprising a terminal plate and a shield plate which are stacked in the first direction, the terminal plate having a plurality of conductive terminals arranged in a second direction, each conductive terminal having a first contact portion positioned at the first mating port and a second contact portion positioned at the second mating port;
• the plurality of insulating spacers and the plurality of terminal modules together forming the first mating port and the second mating port at opposite sides in a third direction perpendicular to the first direction and the second direction, the first mating port and the second mating port being configured to mate with the first connector and the second connector respectively.