Abstract: A scanner for an electronic device having image display functionality includes lower and upper housings, a scan unit, and an adaptor. The lower housing is formed on opposite sides with a paper inlet and a paper outlet. The upper housing is mounted on the lower housing, and includes a main body provided with a terminal hole, and a support member disposed proximate to the terminal hole and to abut against the electronic device when the electronic device is connected to the scanner. The scan unit includes a scan module disposed between the lower and upper housings, a control module coupled to the scan module, and a connecting terminal coupled to the control module and accessible via the terminal hole. The adaptor is removably mounted to the connecting terminal so as to permit direct electrical connection between the scanner and the electronic device.