An electronic device assembly includes an electronic device and a bracket holding the electronic device. The bracket includes a first supporting seat defined a first receiving groove therein and a second supporting seat defined a second receiving groove therein. The first supporting seat is disengagably attachable to the second supporting seat according to either of two selectable arrangements. In a first one of the arrangements, the first receiving groove and the second receiving groove cooperatively define a first receiving chamber having a first width for holding the electronic device in a first orientation. In a second one of the arrangements, the first receiving groove and the second receiving groove cooperatively define a second receiving chamber having a second width for holding the electronic device in a second orientation.