According to one embodiment, a storage device includes a housing, a circuit board, and a module. The circuit board is located in the housing, and includes a first surface and a second surface located opposite the first surface. The module is provided on at least one of the first surface and the second surface of the circuit board. The circuit board is provided with a first notch and a connection portion to be connected to the housing at the periphery. The first notch is provided with a second notch extending toward an area between the connection portion and a module fixation area where the module is fixed on the circuit board.