A power connector system for a circuit card assembly includes a board power connector and a cable power connector coupled to the board power connector. The board power connector includes a board housing having cavities that hold power contacts and signal contact channels on the bottom that hold signal contacts. The cable power connector has a cable housing having contact silos holding cable power contacts terminated to power cables. The contact silos and the cable power contacts are received in the cavities of the board housing to mate the cable power contacts with the board power contacts. The cable housing includes a platform below the contact silos holding cable signal contacts at the bottom of the cable housing outside of the contact silos for mating with the board signal contacts when the cable power connector is mated with the board power connector.