A portable information device includes a chassis, and a cover device that covers the back surface of the chassis. The cover device has a base cover section, a stand cover section rotatable relative to the base cover section and movable between a stored position of being provided along the back surface of the chassis and a standing position of protruding from the back surface of the chassis, and a hinge device. A first bracket has a first notch-shaped portion in a root part of the side end face thereof on the side of a hinge shaft to face the side of the second bracket in the axial direction. A second bracket has a second notch-shaped portion in a root part of the side end face thereof on the side of the hinge shaft to face the side of the first bracket in the axial direction.