An image forming apparatus includes a housing having a front section and a rear section, a user interface including a display and disposed at the front section and not at the rear section, a first port disposed at the front section within which the display is completely included, and a second port disposed at the rear section. The front and rear sections are defined by imaginarily dividing the housing in half and located opposite to each other in a front-rear direction. When a first USB device for a particular function is attached to the second port, the controller performs processing using the particular function with the first USB device. When a second USB device not for the particular function is attached to the second port, the controller causes the user interface to display a notification screen corresponding to that the second USB device is attached to the second port.

An image forming apparatus includes a housing having a front section and a rear section, a user interface including a display and disposed at the front section and not at the rear section, a first port disposed at the front section within which the display is completely included, and a second port disposed at the rear section. The front and rear sections are defined by imaginarily dividing the housing in half and located opposite to each other in a front-rear direction. When a first USB device for a particular function is attached to the second port, the controller performs processing using the particular function with the first USB device. When a second USB device not for the particular function is attached to the first port, the controller causes the user interface to display a notification screen corresponding to that the second USB device is attached to the first port.