The invention relates to a printhead assembly. The assembly includes a printhead module having a plurality of modular printhead tiles each tile having a plurality of micro-electromechanical nozzle assemblies for operatively printing on a printing medium. Also included are printhead controller integrated circuits for controlling operation of the printhead tiles. The printhead assembly further includes a number of electrical connector assemblies for operatively connecting the printhead tiles. Each tile is mounted to a modular support defining a raised portion and a recessed portion at an end thereof, the tile having electrical connecting strips which overlie the respective recessed portions. Each connector assembly includes a connecting member having a series of parallel spaced conducting strips, said member shaped and configured for fitment into a cavity defined by the raised and recessed portions of two abutting supports to connect the connecting strips of two tiles via said conducting strips.