Electrical connector

An electrical connector, comprising:

• an insulating case;
• and
• a first terminal set, configured in the insulating case, all terminals of the first terminal set being arranged at intervals along a horizontal direction, the first terminal set comprising:
• a first ground terminal set, comprising a first ground terminal, a second ground terminal and a third ground terminal;
• a first signal terminal set, vertically staggered from the first ground terminal set and configured between the first ground terminal and the second ground terminal, the first signal terminal set comprising a first signal terminal and a second signal terminal, and the first signal terminal and the second signal terminal being arranged at intervals in a vertical direction;
• and
• a second signal terminal set, vertically staggered from the first ground terminal set and configured between the second ground terminal and the third ground terminal, the second signal terminal set comprising a third signal terminal and a fourth signal terminal, and the third signal terminal and the fourth signal terminal being arranged at intervals in the vertical direction;
• wherein, the first terminal set has a first plane, a second plane and a third plane arranged in sequence along the vertical direction, the second signal terminal and the fourth signal terminal are configured on the first plane, the first signal terminal and the third signal terminal are configured on the second plane, and the first ground terminal, the second ground terminal and the third ground terminal are configured on the third plane.