Abstract: A power adapter for electrically interconnecting different types of a first and second power connectors, includes a first connector portion, a second connector portion, an insulated cover mechanism, a substrate and a mini header with a bunch of electric wires. The first connector portion receives a number of first terminals therein for coupling with the first power connector. The second connector portion receives a number of second terminals therein and is different from the first connector portion in both dimension and electrical configuration for coupling with the second power connector. The substrate on which the first and second connector portions are mounted, is printed with a plurality of conductive traces for transferring electrical signals therebetween. A number of electric wires are exposed to an outside of the cover mechanism to be attached to the mini header for electrical connection with a mother board on which the power adapter is mounted.