A display apparatus, including a display; an interface configured to couple with a dongle, wherein the dongle and the display apparatus are configured to use different operating systems; a user input device; and at least one processor configured to, based on receiving a first execution image of an application from the dongle, display the first execution image on an area of the display, based on receiving a user operation at a point within the area, convert first coordinate information representing a location of the point relative to the display into second coordinate information representing the location of the point relative to the area, and transmit the second coordinate information to the dongle, and based on receiving a second execution image of the application from the dongle, display the second execution image, wherein the second execution image is generated by the dongle based on the second coordinate information.