A server device includes a case, first, second and third hard disk brackets and a first cable management cover. The case includes a main part and an expansion part disposed on the main part. The first hard disk bracket is fixed to the expansion part. The second and third hard disk brackets are pivotably disposed on the main part. A first cable management space is formed between each of two opposite exterior surfaces of the second hard disk bracket and each of two opposite interior surfaces of the main part. The second hard disk bracket is between the first and third hard disk brackets. A second cable management space is between a bottom surface of the third hard disk bracket and a supporting surface of the main part. A first cable management cover is in one of the first cable management spaces and fixed to the main part.

A display device includes a control substrate provided in the display device, a first connecting part provided on the control substrate and connecting a controller to the control substrate, the controller configured to control the display device, and a second connecting part provided on the control substrate and connecting a user interface unit to the control substrate, the user interface unit connected to an external device.

A communication system includes a receptacle assembly and a pluggable module. The receptacle assembly has a receptacle housing includes walls forming a module cavity with a communication connector at a back end thereof. The receptacle assembly has a liquid cooling assembly having a liquid cooling channel coupled to the receptacle housing and a fitting in flow communication with the liquid cooling channel. The pluggable module is receivable in the module cavity and has a pluggable body holding a module circuit board and a liquid cooling assembly coupled to the pluggable body. The liquid cooling assembly includes a liquid cooling channel in thermal communication with the pluggable body and a module fitting mated with the fitting of the receptacle assembly to couple the liquid cooling channel of the pluggable module in flow communication with the liquid cooling channel of the receptacle assembly.

An electronic device includes a motherboard, a bridging device, and an add-in card. The motherboard includes a processor, a first circuit board, and a first connector. The processor is coupled to the first connector through the first circuit board. The bridging device includes a second circuit board and a second connector and is disposed on the motherboard and coupled to the first connector. The second connector is coupled to the first connector through the second circuit board. The add-in card includes a third circuit board and a peripheral circuit and is disposed on the bridging device and coupled to the second connector. The peripheral circuit is coupled to the second connector through the third circuit board. The processor is coupled to the peripheral circuit through a signal path including the first circuit board, the first connector, the second circuit board, the second connector, and the third circuit board.

The present disclosure provides a tool-less assembly hard disk drive bracket, including: a fixation rack, including a fixation bracket portion and a fixation arm connected with a first side of the fixation bracket portion; a rotation rack, including a rotation arm connected with a second side of the fixation bracket portion, and a rotation bracket portion connected with the rotation arm, the rotation bracket portion is connected with the fixation bracket portion to support a hard disk drive; and at least two connecting components, arranged on an inner side of the fixation arm and the rotation arm, respectively, the connecting components connect and fix the hard disk drive in the structure formed by the fixation rack and the rotation rack. The present disclosure is simple in installation, convenient in assembly and disassembly, and easy to maintain, thereby having high economy and practicability.

An electrical equipment for an electrical installation connected to an electrical grid, has at least: a primary functional module (2) suitable for carrying out a current interruption function, and an additional functional module (5) for carrying out a function requiring a power supply The function of the additional functional module (5) is a function requiring a power supply except for an indicator light lighting function.

Embodiments of the present disclosure provide a display device. The display device includes: a display panel; a control circuit board; and a rotary knob assembly connected to the control circuit board. The rotary knob assembly includes a rotary rod and a rotary knob cap, the rotary rod is connected to the rotary knob cap, and the rotary knob cap is configured to drive the rotary rod to rotate. The display panel is connected to the control circuit board, the rotary knob assembly is configured for generating a signal according to an action of the rotary knob cap and transmitting the signal to the control circuit board, and the control circuit board is configured for controlling the display panel to display according to the signal.

A terminal device includes a metal frame. At least two slots are provided on one side of the metal frame; at least two antenna feed points are provided on an inner side wall of the metal frame, and different antenna feed points in the at least two antenna feed points are located on sides of different slots. The terminal device is further provided therein with a signal reflecting wall, and there is a gap between the signal reflecting wall and the at least two slots. The signal reflecting wall is formed by a metal wall of a battery compartment of the terminal device, and the signal reflecting wall is a reflective curved surface that is convex. The metal frame and the signal reflecting wall are electrically connected with a ground plate in the terminal device.

A mount assembly configured to be cooperative with expansion card and socket of circuit board. Mount assembly includes first slide rail, second slide rail, first latch and first slidable stopper. First latch includes first cantilever and first protrusion. First cantilever includes first fixed end part and first free end part that are located opposite to each other. First fixed end part is fixed to sidewall part of first slide rail. First protrusion protrudes from first free end part and is located in groove of first slide rail. First protrusion is configured to be engaged with engagement hole of expansion card. First slidable stopper includes stopper body and handle portion. Stopper body is slidably disposed on sidewall part of first slide rail and movable between blocking position and releasing position. Handle portion protrudes from side of stopper body.

A mount assembly configured to be cooperative with expansion card and socket of circuit board. Mount assembly includes first slide rail, second slide rail, first latch and first slidable stopper. First latch includes first cantilever and first protrusion. First cantilever includes first fixed end part and first free end part that are located opposite to each other. First fixed end part is fixed to sidewall part of first slide rail. First protrusion protrudes from first free end part and is located in groove of first slide rail. First protrusion is configured to be engaged with engagement hole of expansion card. First slidable stopper includes stopper body and handle portion. Stopper body is slidably disposed on sidewall part of first slide rail and movable between blocking position and releasing position. Handle portion protrudes from side of stopper body.