An electrical assembly (202, 614) for a power adapter comprising: a primary PCB having a first circuitry configured to receive an incoming AC voltage and convert it to a DC voltage; a secondary PCB having a second circuitry configured to accept the DC voltage and output the DC voltage; a single-piece insulator unit having a first side and a second side, the first and the second side each having recesses (502, 506) thereon to accept the primary PCB including the first circuitry and the secondary PCB including the second circuitry, respectively; one or more channels embedded in the single-piece insulator unit, wherein each of the one or more channels extends from the first side to the second side, electrically conducting members (510, 602) received in each of the one or more channels for providing an electrical path between the first circuitry of the primary PCB and the second circuitry of the secondary PCB; further comprising a power transformer attached to the single-piece insulator unit; characterized by further comprising: a common mode choke attached to the single-piece insulator unit; wire channels embedded in the single-piece insulator unit proximate one of the recesses (502, 506) to accept the primary PCB, the wire channels sized and oriented to route the wires of the common mode choke from an electronic component of the primary PCB to one or more predetermined locations where the wires of the common choke are terminated to other electronic components of the primary PCB. a primary PCB having a first circuitry configured to receive an incoming AC voltage and convert it to a DC voltage; a secondary PCB having a second circuitry configured to accept the DC voltage and output the DC voltage; a single-piece insulator unit having a first side and a second side, the first and the second side each having recesses (502, 506) thereon to accept the primary PCB including the first circuitry and the secondary PCB including the second circuitry, respectively; one or more channels embedded in the single-piece insulator unit, wherein each of the one or more channels extends from the first side to the second side, electrically conducting members (510, 602) received in each of the one or more channels for providing an electrical path between the first circuitry of the primary PCB and the second circuitry of the secondary PCB; further comprising a power transformer attached to the single-piece insulator unit; characterized by further comprising: a common mode choke attached to the single-piece insulator unit; wire channels embedded in the single-piece insulator unit proximate one of the recesses (502, 506) to accept the primary PCB, the wire channels sized and oriented to route the wires of the common mode choke from an electronic component of the primary PCB to one or more predetermined locations where the wires of the common choke are terminated to other electronic components of the primary PCB. a common mode choke attached to the single-piece insulator unit; wire channels embedded in the single-piece insulator unit proximate one of the recesses (502, 506) to accept the primary PCB, the wire channels sized and oriented to route the wires of the common mode choke from an electronic component of the primary PCB to one or more predetermined locations where the wires of the common choke are terminated to other electronic components of the primary PCB.