A hard drive backplane has a plurality of ventilation holes, and the expansion cavity muffler is mounted in the ventilation holes of the hard drive backplane. The expansion cavity muffler includes at least one expansion cavity and at least one connecting pipe in communication in a first direction. The connecting pipe at one end of the expansion cavity muffler facing toward the hard drive backplane is fixedly mounted in the ventilation hole such that the expansion cavity muffler is in communication with the ventilation hole. An area of a cross-section that is of each expansion cavity and that is perpendicular to the first direction is larger than an area of a cross-section that is of the connecting pipe adjacent to the expansion cavity and that is perpendicular to the first direction. The first direction is perpendicular to a surface of the hard drive backplane.

A hard drive backplane has a plurality of ventilation holes, and the expansion cavity muffler is mounted in the ventilation holes of the hard drive backplane. The expansion cavity muffler includes at least one expansion cavity and at least one connecting pipe in communication in a first direction. The connecting pipe at one end of the expansion cavity muffler facing toward the hard drive backplane is fixedly mounted in the ventilation hole such that the expansion cavity muffler is in communication with the ventilation hole. An area of a cross-section that is of each expansion cavity and that is perpendicular to the first direction is larger than an area of a cross-section that is of the connecting pipe adjacent to the expansion cavity and that is perpendicular to the first direction. The first direction is perpendicular to a surface of the hard drive backplane.

Provided is a heat-dissipating, shock-absorbing structure which is applicable to an electronic module with a hard disk drive. The heat-dissipating, shock-absorbing structure includes a heat-dissipating frame, an elastomer, and a plurality of heat conduction layers. The heat-dissipating frame has a fixing segment and two extending segments. The extending segments connect with two ends of the fixing segment. The fixing segment connects with one side of the hard disk drive. The distance between the extending segments is greater than the thickness of the hard disk drive. At least a portion of the elastomer is disposed at the extending segments. The heat conduction layers cover the elastomer.

Provided is a heat-dissipating, shock-absorbing structure which is applicable to an electronic module with a hard disk drive. The heat-dissipating, shock-absorbing structure includes a heat-dissipating frame, an elastomer, and a plurality of heat conduction layers. The heat-dissipating frame has a fixing segment and two extending segments. The extending segments connect with two ends of the fixing segment. The fixing segment connects with one side of the hard disk drive. The distance between the extending segments is greater than the thickness of the hard disk drive. At least a portion of the elastomer is disposed at the extending segments. The heat conduction layers cover the elastomer.

A suspension includes a load beam with first and second openings, a flexure including first and second outriggers, and first and second damper members. The first damper member is attached to the load beam and part of the first outrigger that overlaps the first opening of the load beam. The second damper member is attached to the load beam and part of the second outrigger that overlaps the second opening of the load beam. The first opening includes a region which is not covered by the first damper member, and the second opening includes a region which is not covered by the second damper member.

A suspension includes a load beam, a flexure including first and second outriggers, and first and second damper members. The first outrigger is formed to oppose the first surface and across the first opening. The second outrigger is formed to oppose the first surface and across the second opening. The first damper member is attached to the first outrigger at the first opening and the first surface. The second damper member is attached to the second outrigger at the second opening and the first surface. An edge portion of the first opening and the first damper member are spaced apart and an edge portion of the second opening and the second damper member are spaced apart.

An electronic device can include a first electronic component, a second electronic component, and an energy dampener positioned between and in contact with the first electronic component and the second electronic component. The energy dampener in this example includes a carbon nanotube-aerogel matrix including carbon nanotubes embedded in an aerogel with a rubber composited therewith.

An electronic device can include a first electronic component, a second electronic component, and an energy dampener positioned between and in contact with the first electronic component and the second electronic component. The energy dampener in this example includes a carbon nanotube-aerogel matrix including carbon nanotubes embedded in an aerogel with a rubber composited therewith.

According to one embodiment, an operating condition determining device includes a memory, and a processer. The memory is configured to store a plurality of classifications relating to information corresponding to a vibration state of a magnetic recording/reproducing device, and a plurality of setting parameter sets relating to an operation of the magnetic recording/reproducing device. The setting parameter sets correspond to the classifications. The processer is configured to acquire a first data. The first data includes information of the vibration state of the magnetic recording/reproducing device. The information is measured. The processer is configured to acquire one of the setting parameter sets from the memory. The one of the setting parameter sets corresponds to one of the classifications corresponding to the first data.

A plate member of an acoustic equipment includes a flat plate that constitutes at least a part of the plate member that is used in the acoustic equipment. The flat plate includes a first drawn portion and a second drawn portion. The first drawn portion is recessed in a thickness direction of the flat plate with respect to a predetermined plane orthogonal to the thickness direction of the flat plate and has a rectangular outline when viewed in the thickness direction of the flat plate. The first drawn portion and the second drawn portion are arranged adjacent to each other so as to provide a predetermined gap therebetween. When a standing wave is formed on the flat plate, the first drawn portion and the second drawn portion are arranged so that the gap is located in a position of an antinode of the standing wave.