IMAGE FORMING DEVICE HAVING A SUPPLY ITEM THAT INCLUDES A RETAINER ASSEMBLY HAVING POSITIONING FEATURES FOR PROCESSING CIRCUITRY

An electrophotographic image forming device includes a replaceable unit that has a housing having an internal reservoir for storing toner. A circuit board retainer is positioned on an exterior surface of the housing. The retainer includes a top having an undersurface having first and second supports extending away from the undersurface of the top toward a bottom of the retainer. A mounting platform is positioned on the undersurface of the top intermediate the first and second supports and spaced apart from the bottom of the retainer. A circuit board is mounted on the mounting platform. The top and the first and second supports form an opening at the front of the retainer sized to receive an electrical connector of the image forming device for mating with the circuit board when the replaceable unit is installed in the image forming device.