Edge Connector, Circuit Board, and Connector Component

An edge connector, comprising:

• a base board having one edge as a plugging end of the edge connector;
• a first row of golden fingers adjacent to the plugging end including a first plurality of golden fingers disposed in parallel and isolated from each other on the base board;
• a second row of golden fingers including a second plurality of golden fingers disposed in parallel and isolated from each other on the base board further away from the plugging end than the first row of golden fingers;
• and
• a third row of golden fingers including a third plurality of golden fingers disposed in parallel and isolated from each other on the base board further away from the plugging end than the second row of golden fingers;
• wherein:
• each golden finger in the first row of golden fingers has a first end proximate to the plugging end and a second end opposite to the first end, the first row of golden fingers includes a grounded golden finger, a power signal transmitting golden finger, and a communication signal transmitting golden finger, the grounded golden finger is longer than each of the power signal transmitting golden finger and the communication signal transmitting golden finger, the first end of the grounded golden finger in the first row of golden fingers extends further toward the plugging end than each of the first end of the power signal transmitting golden finger and the first end of the communication signal transmitting golden finger, the second end of the grounded golden finger extends further away from the plugging end than the second end of the power signal transmitting golden finger, and the second end of the power signal transmitting golden finger extends further away from the plugging end than the second end of the communication signal transmitting golden finger;
• and
• each golden finger in the second row of golden fingers has a first end proximate to the plugging end and a second end opposite to the first end, the first ends of the plurality of second golden fingers are not flush with the plugging end;
• and
• each golden finger in the third row of golden fingers has a first end proximate to the first row of golden fingers and a second end opposite to the first end, the third row of golden fingers includes a grounded golden finger and one or more non-grounded golden fingers, the grounded golden finger in the third row is longer than the non-grounded golden fingers, and the first end of the grounded golden finger in the third row of golden fingers extends further toward the plugging end than the first end of the non-grounded golden fingers.