An electrical connector includes a housing (2). A floor (20) is defined in a middle of the housing and a plurality of side walls (22) is defined therearound. The side walls and the floor cooperatively define a substantially rectangular cavity (24) therebetween. A plurality of passageways (26) is defined in the floor for receiving a corresponding number of electrical contacts (3) therein. Each contact includes an arm (30) extending beyond the floor for contacting with corresponding contacting pad of the LGP (4). All the arms extend in a plurality of rows, parallel to one diagonal of the floor, and the arms in a same row are arranged side by side. Each passage includes an upper receiving portion extending into an adjacent passage in the same line, therefore, the passages in the same line are stringed, and a continuous support member is formed between two rows of stringed passages.