An electrical connector includes at least one body, a frame having at least one accommodating area for accommodating the body, a supporting cover, multiple signal terminals, and at least one grounding terminal. The body has an upper surface and a lower surface which are both smooth planes, multiple signal receiving slots and at least one grounding receiving slot. A conducting layer is disposed at the upper surface and extends to the grounding receiving slot. The upper surface has an isolation area at a position adjacent to the periphery of each signal receiving slot. The isolation area does not have the conducting layer. The supporting cover is assembled to the frame, covers the body, and used for supporting the chip module disposed on the supporting cover. The terminals are respectively received in the receiving slots, and passing through the supporting cover to be electrically connected to the chip module.