Abstract: An expansion card positioning mechanism is configured to be disposed on a plate member. The expansion card positioning mechanism includes a movable member and a positioning member. The movable member includes a base portion and a first teeth portion. The base portion is configured to be slidably disposed on the plate member, and the first teeth portion is disposed on the base portion. The positioning member includes a plate portion, a positioning recess portion and a second teeth portion. The plate portion is rotatably disposed on a side of the base portion. The positioning recess portion and the second teeth portion are disposed on the plate portion. The second teeth portion meshes with the first teeth portion, so that the base portion forces the plate portion to rotate relative to the base portion via the first teeth portion and the second teeth portion meshing with each other.

Abstract: An expansion card positioning mechanism is configured to be disposed on a plate member. The expansion card positioning mechanism includes a movable member and a positioning member. The movable member includes a base portion and a first teeth portion. The base portion is configured to be slidably disposed on the plate member, and the first teeth portion is disposed on the base portion. The positioning member includes a plate portion, a positioning recess portion and a second teeth portion. The plate portion is rotatably disposed on a side of the base portion. The positioning recess portion and the second teeth portion are disposed on the plate portion. The second teeth portion meshes with the first teeth portion, so that the base portion forces the plate portion to rotate relative to the base portion via the first teeth portion and the second teeth portion meshing with each other.

Abstract: A fan unit assembly includes a fan rack, fan units and handles. The fan rack includes a carrier and parallel partition boards erected on the carrier to define fan-disposing regions. The partition board has at least one first positioning part and at least one first guiding part facing the corresponding fan-disposing region. The fan unit has two side surfaces and a front surface. The front surface connects the side surfaces. The side surfaces respectively have a second guiding part engaged with the first guiding part. The fan unit is suitable to move along the first guiding part through the second guiding part. The handles are disposed at the front surface and both ends thereof are bent to form two pivot portions respectively pivoted on the side surfaces. Each pivot portion has a second positioning part. When the handle rotates towards the front surface, the positioning parts interfere with each other.

Abstract: A fan unit assembly includes a fan rack, fan units and handles. The fan rack includes a carrier and parallel partition boards erected on the carrier to define fan-disposing regions. The partition board has at least one first positioning part and at least one first guiding part facing the corresponding fan-disposing region. The fan unit has two side surfaces and a front surface. The front surface connects the side surfaces. The side surfaces respectively have a second guiding part engaged with the first guiding part. The fan unit is suitable to move along the first guiding part through the second guiding part. The handles are disposed at the front surface and both ends thereof are bent to form two pivot portions respectively pivoted on the side surfaces. Each pivot portion has a second positioning part. When the handle rotates towards the front surface, the positioning parts interfere with each other.

Abstract: A fan module including a fan frame, at least one fan unit, and a plurality of resilient pins is provided. The fan frame is provided with an accommodation space therein and is disposed with a plurality of mounting slots thereon. The fan unit is disposed in the accommodation space and has a base, in which the base has a plurality of mounting holes corresponding to the mounting slots. Each resilient pin has an insert end and a catch end. The insert end is penetrated through the corresponding mounting hole and the catch end is caught in the corresponding mounting slot, such that the fan unit is mounted to the fan frame by the resilient pins. Since the resilient pins are used to replace conventional screws in the present invention, the fan module is enabled to have a better damping effect, thereby meeting requirements for low-noise operation.

Abstract: A staggered embedded type casing is provided. The staggered embedded type casing includes a first casing and a second casing combine together to form a casing body. The first casing has a first surface and a first side. The second casing has a second surface and a second side. The first surface and the second surface are coplanar. A plurality of first embedded portions protrudes from the first side of the first casing and extends to the bottom of the second surface. A plurality of second embedded portions protrudes from the second side of the second casing and extends to the bottom of the first surface. The first embedded portions and the second embedded portions are staggered.

Abstract: A server chassis is provided. The server chassis includes a chassis body, a hard disk cage and a top cover. The upper surface of the hard disk cage is fixed on the hard disk cage such that the upper surface of the hard disk cage and the hard disk cage would form an integral whole. The hard disk cage could be removably assembled on the chassis body, so as to conveniently change the hard disks with different sizes therebetween. Therefore, the top cover of the present invention would fully cover the rear portion of the upper surface of the hard disk cage without changing the size or adding another cover, so as to achieve the purpose of integral whole assembling.