Abstract: A module functioning as an expansion of a computing device and providing a means of heat dissipation for an additional component mounted therein without disassembly of the computing device includes a mounting frame comprising a heat dissipating opening; a heat-dissipation structure is disposed on the mounting frame, a thermally-conductive sheet is disposed on a bottom surface of the heat-dissipation structure. The expansion device can be detachably inserted in the mounting frame and the expansion device contacts the thermally-conductive sheet when inserted in the mounting frame.

Abstract: An electronic device includes a housing and a rotary switch received within the housing. The rotary switch includes a circuit board, a disk, a connecting shaft, and a pneumatic component. The connecting shaft protrudes from a central axis of the disk and connects to the circuit board. The pneumatic component is electrically coupled to the circuit board and includes an air chamber and a connecting rod. The connecting rod and the piston move together along the axis of the air chamber. The piston and the air chamber cooperatively define a sealed space. A circumference of the disk includes a number of protrusions. An engaging groove is defined between each two adjacent protrusions. A distance between a central axis of the disk and an inner wall of each engaging groove is different. The connecting rod selectively engages with a corresponding one of the engaging grooves.

Abstract: A wireless router that can be switched to operate at different wireless modes by repeated presses on a button includes a rotatable disk and a first printed circuit board. A first magnetic component and a first conductive sheet array are fixed on the rotatable disk. The first conductive sheet array includes first conductive sheets. A first and a second magnetic component arrays are fixed on the first printed circuit board. The first magnetic component array includes second magnetic components. The second conductive sheet array includes second conductive sheets. The wireless router is configured to be switched between wireless modes by rotating the rotatable disk to one of the wireless modes, the first magnetic component absorbs the second magnetic component corresponding to the first magnetic component, an electrical contact is made between one of the first conductive sheets and the second conductive sheet that is corresponding to the first conductive sheet.

Abstract: An electronic device includes a housing and a rotary switch received within the housing. The rotary switch includes a circuit board, a disk, a connecting shaft, and a pneumatic component. The connecting shaft protrudes from a central axis of the disk and connects to the circuit board. The pneumatic component is electrically coupled to the circuit board and includes an air chamber and a connecting rod. The connecting rod and the piston move together along the axis of the air chamber. The piston and the air chamber cooperatively define a sealed space. A circumference of the disk includes a number of protrusions. An engaging groove is defined between each two adjacent protrusions. A distance between a central axis of the disk and an inner wall of each engaging groove is different. The connecting rod selectively engages with a corresponding one of the engaging grooves.

Abstract: A disk drive mounting assembly is configured to mount a disk drive. The disk drive mounting assembly can include a carrier configured to receive a disk drive and a retainer configured to be coupled to the disk drive and retain the disk drive in the carrier. The retainer can include a main body, a head extending from the main body, and two wings extending from two opposite sides of the main body and configured to be coupled to the disk drive. The head has a distal end spaced from the main body and the wings. The head has a distal end moving toward the main body when the head is pressed, and has the end moving away from the main body retain the disk drive in the carrier when the head is released.

Abstract: A mounting device for mounting a hard disk drive (HDD) includes a frame and a fixing member. The frame includes two side boards and a connecting board connected between the side boards. Each side board defines a latching hole and a positioning hole. The fixing member includes two arms fixed to opposite sides of the HDD and a resilient handle connected between the arms. Two latching portions extend from opposite ends of the handle to be detachably engaged in the latching holes. A protrusion protrudes from each arm to be detachably inserted into a corresponding one of the positioning holes. The handle can be pulled away from the connecting board to disengage the latching portions from the corresponding latching holes.

Abstract: An electrical connector assembly for electronically connecting a chip to a circuit board includes an electrical connector and a cover. The electrical connector includes a flip cover, a control element, a main body, and a fixing element. The flip cover is rotatably connected to the fixing element through the control element. The main body and the fixing element are located on the circuit board, and the chip is located on the main body. The cover is removably mounted on the flip cover. When the flip cover and the control element are rotated to be opened relative to the main body, the control element is rotated relative to the fixing element and is engaged with the flip cover.