An electrical connector assembly includes an insulative housing and a set of contacts retained in the insulative housing, the contacts including a power contact, a negative contact, a positive contact, a first grounding contact, a power provided by device (DPWR) contact, and a second grounding contact, a contacting portion of each of the set of second contacts being spaced a respective contacting distance from a front end surface of the insulative housing. A contacting distance management makes the mating connector sequentially connect with the power contact and the grounding contact, the negative contact and the positive contact, all the first contacts, the DPWR contact, the grounding contacts. Such contact arrangement is to prevent a false recognition of the two power contacts by power system circuits.