An electronic device, including a main body, a processing unit, a display screen and a PCI-E insert row. The main body has a substrate and a shell portion disposed by two opposite side faces of the substrate, the substrate is provided with an electronic unit; the processing unit is disposed in the main body; the display screen is attached to the main body and viewable from outside of the electronic device, the display screen is electrically connected with the processing unit, the processing unit can control a display state of the display screen; and the PCI-E insert row is disposed on the substrate, and the PCI-E insert row is electrically connected with the electronic unit.