A toner cartridge for use with image forming devices according to one example embodiment includes an interior to contain toner that is transferred to the image forming device and used during image formation and includes one or more engagement features that interact with the image forming device during insertion. The engagement features may include one or more alignment features that align the cartridge during insertion into the image forming device. The engagement features may also include one or more functional features that allow the cartridge to effectively transfer the toner to the image forming device.