Information processing apparatus

A storage device stores device configuration definitions including a plurality of device image parts indicating the image forming apparatus and one or more devices physically attachable to the image forming apparatus, respectively, a plurality of device image definitions defining the plurality of device image parts with respect to a plurality of device identifiers identifying the image forming apparatus and the one or more devices, respectively, and a plurality of device offset information definitions defining offset amounts with respect to the plurality of device identifiers, respectively, the offset amounts indicating relative positions of the plurality of device image parts, respectively. A processor operates as a device image processor carried out by a software executing module, the software executing module being configured to execute a software program for driving and/or managing the image forming apparatus on an OS, and a device image module configured to communicate with the device image processor.