A card edge connector for use with a daughter board, and comprises an insulative elongated housing extending along a longitudinal direction, and defining opposite first and second side walls and a central slot formed therebetween for receiving the daughter board therein, a plurality of contacts each defining a retention portion retained in the housing, a resilient contact portion extending into the central slot from an upper portion of the retention portion for contacting with the daughter board, and a solder tail extending out of the housing form a lower portion of the retention portion. Wherein the contacts include a first row of contacts disposed in the first side wall, and a second row of contacts disposed in the second side wall. The first row of contacts have at least two adjacent grounding contacts electrically connected with each other during the contact portions of the contacts are contacting with the daughter board.