Abstract: An electronic device is provided. The electronic device includes a heat source, a heat-conductive member and a heat-dissipating sheet. The heat-conductive member includes a recess, wherein the recess is thermally connected to the heat source. The heat-dissipating sheet is attached to the heat-conductive member, wherein the heat-dissipating sheet covers the recess.

Abstract: An electronic device is provided. The electronic device includes a heat source, a heat-conductive member and a heat-dissipating sheet. The heat-conductive member includes a recess, wherein the recess is thermally connected to the heat source. The heat-dissipating sheet is attached to the heat-conductive member, wherein the heat-dissipating sheet covers the recess.

Abstract: A multifunction expansion device includes a driving unit, an expansion unit and a connecting unit. The multifunction expansion device is characterized that, the expansion unit is electrically connected to the driving unit and the connecting unit. The expansion unit further includes an input and output device and a signal device. The input and output device is provided with a plurality of connecting pins, and allows a plurality of connecting pins to enable corresponding connection and transmission through connecting pin combinations in different quantities and operating with the signal device. Accordingly, by utilizing various combinations of idle connecting pins and operating with the signal device, the expansion unit allows the driving unit to operate devices of the connecting unit, thereby allowing the expansion module to correspond with various devices.