Abstract: A server cabinet includes a cabinet body having a side plate, a door pivotably coupled to a front side of the side plate, a power distribution unit mounted in the cabinet body, and a plurality of power supply units attached to an inner side of the door. The power supply units are electrically coupled with the power distribution unit and configured to be electrically coupled with a plurality of servers through a plurality of cables, the power supply units being detachable and replaceable in spite of minimal physical access through the partly-closed door.

Abstract: A server cabinet includes a cabinet body having a side plate, a door pivotably coupled to a front side of the side plate, a power distribution unit mounted in the cabinet body, and a plurality of power supply units attached to an inner side of the door. The power supply units are electrically coupled with the power distribution unit and configured to be electrically coupled with a plurality of servers through a plurality of cables, the power supply units being detachable and replaceable in spite of minimal physical access through the partly-closed door.

Abstract: A power supply positioning apparatus includes a bracket and a circuit board mounted in the bracket. The bracket defines a receiving slot for receiving a power supply unit. A connector is mounted on the circuit board and aligns with the receiving slot. A first end of the bracket is rotatably connected to a chassis of an electronic device, and a second end of the bracket can be latched to the chassis. The bracket faces outside of the chassis.

Abstract: A power supply positioning apparatus includes a bracket and a circuit board mounted in the bracket. The bracket defines a receiving slot for receiving a power supply unit. A connector is mounted on the circuit board and aligns with the receiving slot. A first end of the bracket is rotatably connected to a chassis of an electronic device, and a second end of the bracket can be latched to the chassis. The bracket faces outside of the chassis.

Abstract: A server cabinet for retaining at least one computer server includes a plurality of perforated holding poles and a plurality of retaining apparatuses. Each of the plurality of retaining apparatuses can be secured to a computer server and clamp a holding pole, such that the computer server is secured on the plurality of holding poles both vertically and horizontally by the plurality of retaining apparatuses.

Abstract: An electronic device includes a cabinet and electronic units received in the cabinet. A window is defined between two front columns. Each electronic unit includes a casing, which includes a top plate, a lateral side and a rotator. The lateral side defines an engaging opening therein. The rotator is movably connected to the casing and includes an engaging portion and an abutting portion. The abutting portion extends above the top plate. the engaging portion is received in the casing. When the abutting portion is pushed down, the rotator moves to cause the engaging portion to extend through the engaging opening to engage with the cabinet and to prevent the casing from being pulled out from the cabinet.

Abstract: An exemplary electronic device assembly includes a cabinet and electronic devices received in the cabinet. The cabinet includes four columns substantially positioned at four corners of the cabinet. A window is defined between two front columns. Each electronic device includes a casing, which includes a bottom plate, a lateral side and an actuator. The bottom plate defines an inserting opening therein. The lateral side defines an engaging opening therein. The actuator movably connects to the casing and includes an engaging portion and an abutting portion. The abutting portion extends through the inserting opening. The engaging portion extends through the engaging opening and engages with one of the columns. When the abutting portion is pushed up, the actuator moves and the engaging portion disengages from the column.

Abstract: A server cabinet for retaining at least one computer server includes a plurality of perforated holding poles and a plurality of retaining apparatuses. Each of the plurality of retaining apparatuses can be secured to a computer server and clamp a holding pole, such that the computer server is secured on the plurality of holding poles both vertically and horizontally by the plurality of retaining apparatuses.

Abstract: A holding apparatus includes a receiving element and an elastic element. The receiving element is fixed on a circuit board and receives an upright plug-in element. The receiving element defines two through holes in two sides of the receiving element. The through holes have different axial lines. The elastic element includes a main pole and two branch poles respectively perpendicularly extending down from two ends of the main pole. Two opposite pins respectively extend from distal ends of the branch poles. The pins of the elastic element are respectively inserted in the through holes of the receiving element, to locate the upright plug-in element between the elastic element and the receiving element.

Abstract: A mounting apparatus is adjusted to selectively mount a first expansion card or a second expansion card. The mounting apparatus includes a bracket, a retaining member fixed to the bracket, and a pivoting member pivotably attached to the retaining member. The pivoting member defines a first locking slot and a second locking slot. The pivoting member is pivotable along a first direction to limit the first expansion card. The pivoting member is pivotable along a direction opposing to the first direction to limit the second expansion card.

Abstract: A fan module includes a housing, a connecting member, and a fan assembly. The housing includes a bottom wall and a sidewall extending up from the bottom wall. The connecting member is slidably mounted to the bottom wall. The fan assembly includes a frame slidably mounted on the connecting member, and a fan detachably received in the frame.

Abstract: An exemplary electronic device assembly includes a cabinet and electronic devices received in the cabinet. The cabinet includes four columns substantially positioned at four corners of the cabinet. A window is defined between two front columns. Each electronic device includes a casing, which includes a bottom plate, a lateral side and an actuator. The bottom plate defines an inserting opening therein. The lateral side defines an engaging opening therein. The actuator movably connects to the casing and includes an engaging portion and an abutting portion. The abutting portion extends through the inserting opening. The engaging portion extends through the engaging opening and engages with one of the columns. When the abutting portion is pushed up, the actuator moves and the engaging portion disengages from the column.

Abstract: An electronic device includes a cabinet and electronic units received in the cabinet. A window is defined between two front columns. Each electronic unit includes a casing, which includes a top plate, a lateral side and a rotator. The lateral side defines an engaging opening therein. The rotator is movably connected to the casing and includes an engaging portion and an abutting portion. The abutting portion extends above the top plate. the engaging portion is received in the casing. When the abutting portion is pushed down, the rotator moves to cause the engaging portion to extend through the engaging opening to engage with the cabinet and to prevent the casing from being pulled out from the cabinet.

Abstract: A mounting apparatus is adjusted to selectively mount a first expansion card or a second expansion card. The mounting apparatus includes a bracket, a retaining member fixed to the bracket, and a pivoting member pivotably attached to the retaining member. The pivoting member defines a first locking slot and a second locking slot. The pivoting member is pivotable along a first direction to limit the first expansion card. The pivoting member is pivotable along a direction opposing to the first direction to limit the second expansion card.

Abstract: A holding apparatus includes a receiving element and an elastic element. The receiving element is fixed on a circuit board and receives an upright plug-in element. The receiving element defines two through holes in two sides of the receiving element. The through holes have different axial lines. The elastic element includes a main pole and two branch poles respectively perpendicularly extending down from two ends of the main pole. Two opposite pins respectively extend from distal ends of the branch poles. The pins of the elastic element are respectively inserted in the through holes of the receiving element, to locate the upright plug-in element between the elastic element and the receiving element.

Abstract: A hard disk drive holder includes a main body, a spindle mounted to the main body and slidable between first and second positions, a handle rotatably connected to the main body via the spindle, a hook mounted to the handle, and first and second elastic members. The handle includes a locking tongue. The handle moves between closed and opened positions relative to the main body. When the handle is at the closed position, if the spindle is slid from the first position to the second position, the locking tongue gradually extends outside from the main body. When the handle is at the closed position, if the spindle is not at the first position, the hook can hook the main body. The first elastic member biases the spindle to slide to the second position. The second elastic member biases the handle to rotate to the opened position.

Abstract: A hard disk drive holder includes a main body, a spindle mounted to the main body and slidable between first and second positions, a handle rotatably connected to the main body via the spindle, a hook mounted to the handle, and first and second elastic members. The handle includes a locking tongue. The handle moves between closed and opened positions relative to the main body. When the handle is at the closed position, if the spindle is slid from the first position to the second position, the locking tongue gradually extends outside from the main body. When the handle is at the closed position, if the spindle is not at the first position, the hook can hook the main body. The first elastic member biases the spindle to slide to the second position. The second elastic member biases the handle to rotate to the opened position.