A card edge connector includes a housing and a contact assembly. The housing has a cavity, a card slot and a chamber adjacent the card slot. The card slot receives a card edge of a module circuit board of a pluggable module. The contact assembly has a contact holder, first contacts held by the contact holder, and a contact positioner. The contact positioner is forward of the contact holder and located in the chamber for receiving mating ends of the first contacts. The contact positioner is movable in the chamber relative to the contact holder and the housing between an inward position and an outward position. The contact positioner moves the mating ends of the first contacts outward from the card slot as the contact positioner is moved from the inward position to the outward position.