A toner cartridge (100, 400) for use in an image forming device, comprising: a housing (102, 402) having a top (106, 406), a bottom (108, 408), a front (114, 414), and a rear (116, 416) positioned between a first side (110, 410) and a second side (112, 412) of the housing (102, 402), the housing (102, 402) defining a reservoir for containing toner therein, the housing (102, 402) having an elongated shape extending from the first side (110, 410) to the second side (112, 412); an exit port (152, 452) in fluid communication with the reservoir; a toner delivery system for transferring toner from the reservoir out of the exit port (152, 452) that includes a main interface gear (130, 430) for providing rotational power to the toner delivery system, a portion of the main interface gear (130, 430) being engagable with a corresponding drive gear in the image forming device; a projection projecting from the front (114, 414) of the housing (102, 402) spaced from exit port (152, 452) toward the first side (110, 410) of the housing (102, 402),; the projection includes a forward projecting portion that extends away from the front (114, 414) of the housing (102, 402) and a knob that extends towards the first side (110, 410) of the housing (102, 402) from the front of the forward projecting portion characterized by the exit port (152, 452) facing downward on the front (114, 414) of the housing (102, 402) near the first side (110,410), a portion of the main interface gear (130, 430) being exposed on the front (114, 414) of the housing (102, 402) near the top (106, 406) of the second side (112, 412), the projection extending further forward than a frontmost portion of the exit port (152, 452) and a front of the projection being unobstructed for engaging a shutter on a developer unit when the toner cartridge (100, 400) is inserted into the image forming device. a housing (102, 402) having a top (106, 406), a bottom (108, 408), a front (114, 414), and a rear (116, 416) positioned between a first side (110, 410) and a second side (112, 412) of the housing (102, 402), the housing (102, 402) defining a reservoir for containing toner therein, the housing (102, 402) having an elongated shape extending from the first side (110, 410) to the second side (112, 412); an exit port (152, 452) in fluid communication with the reservoir; a toner delivery system for transferring toner from the reservoir out of the exit port (152, 452) that includes a main interface gear (130, 430) for providing rotational power to the toner delivery system, a portion of the main interface gear (130, 430) being engagable with a corresponding drive gear in the image forming device; a projection projecting from the front (114, 414) of the housing (102, 402) spaced from exit port (152, 452) toward the first side (110, 410) of the housing (102, 402),; the projection includes a forward projecting portion that extends away from the front (114, 414) of the housing (102, 402) and a knob that extends towards the first side (110, 410) of the housing (102, 402) from the front of the forward projecting portion characterized by the exit port (152, 452) facing downward on the front (114, 414) of the housing (102, 402) near the first side (110,410), a portion of the main interface gear (130, 430) being exposed on the front (114, 414) of the housing (102, 402) near the top (106, 406) of the second side (112, 412), the projection extending further forward than a frontmost portion of the exit port (152, 452) and a front of the projection being unobstructed for engaging a shutter on a developer unit when the toner cartridge (100, 400) is inserted into the image forming device.