An image-forming apparatus includes a developing cartridge, a drum cartridge, an electrical contact, a frame to which the developing cartridge attached to the drum cartridge is attachable, and first and second guide portions. The developing cartridge includes a storage medium having an electrical contact surface, and a holder including: a first outer surface holding the electrical contact surface, a second outer surface, and a resilient member connected to the both outer surfaces. The drum cartridge includes a holder support portion. The frame allows the developing cartridge to move from a first position to a second position, and then to a third position during insertion of the developing cartridge into the frame. The first guide portion guides the first outer surface, and the second guide portion guides the holder support portion to allow the electrical contact surface to contact the electrical contact during insertion of the developing cartridge into the frame.