An electrical connector (100) includes an insulative housing (1), and a number of contacts received therein. The contacts include a pair of first and second grounding contacts (212, 222), and a pair of first and second signal contacts (211, 221). Each of the first signal and grounding contacts includes a first contact portion (213), a first mounting portion (214), a first horizontal portion (215), and a first connecting portion (216). Each of the second signal and grounding contacts includes a second contact portion (223), a second mounting portion (224), and a second horizontal portion (225). A first distance (d1) between the first connecting portion and the second mounting portion is greater than a second distance (d2) between the first and second horizontal portions, and is also greater than a third distance (d3) between the first and second mounting portions.