Abstract: An all-in-one computer includes a display module and a host provided in a housing of the display module. The host includes a power module, a cell module and a circuit board electrically connected with the power module, the cell module and a panel of the display module respectively. A processing unit and a control unit are provided on the circuit board. The processing unit is configured to optionally receive the power from the power module and operating at a first frequency or receive the power from the cell module and operate at a second frequency lower than the first frequency. The control unit is configured to disable the power module and enable the cell module according to a voltage level of the power module and cause the processing unit to operate at a reduced frequency for decreasing power consumption thereof are provided.

Abstract: An electrical connector, which is adapted to a printed circuit board (PCB) with a first connection port, comprises a bottom having a base and a conductive element mounted in an opening of the base, a second connection port disposing on the base, and a housing covering the bottom. When the bottom is disposed on the PCB, the first connection port is accommodated in the opening of the base, and an elastic strip of the conductive element presses on the first connection port toward a direction parallel to the PCB for combining the electrical connector and the first connection port on the PCB, and preventing the separation or loose connection of the electrical connector from the first connection port or the PCB.