Abstract: A control device for fan state includes fan connectors arranged on a substrate and connected with at least one fan. The substrate and the fan are arranged in a case of a computer. The substrate is provided with at least one communication port, at least one microphone and a microcontroller. The communication port receives temperature signals transmitted by the computer. The microphone receives volume signals within the case. A microcontroller is electrically connected with the fan connectors, the communication port and the microphone. After the microcontroller receives the temperature signal and the volume signal, the microcontroller uses them to determine whether a value of the temperature signal or the volume signal is larger than its given value. If the answer is yes, the microcontroller controls a rotational speed of the fan, turns off the fan, or provides control items displayed on a screen of the computer to choose.

Abstract: A fixing device for an expansion card is installed on a frame of a desktop computer to fix an expansion card on the desktop computer. The fixing device includes at least two installation bases. After adjusting an interval between the installation bases, the installation bases are fixed to an opening of the frame by locking members. Each of the installation bases is provided with an installing through hole, such that an installation portion at the rear end of each of two fixing rods penetrates through the installing through. The front ends of the fixing rods vertically extend to form clamping portions to clamp the expansion card. The clamping portions and the expansion card are provided with a fixing batten to stabilize the expansion card.

Abstract: A cable reel for audio-visual device includes an upper base and a lower base attracted to an external device. An audio-visual device hangs on a top of the lower base. The upper base cooperates with the lower base whereby connection cables are spooled and accommodated in an upper circular groove of the upper base and a lower circular groove of the lower base. The present invention places the audio-visual device so that a user can easily spool connection cables of the audio-visual device with one hand. Once the audio-visual device is not needed, the user can rapidly and conveniently manage cables and place the audio-visual device without worrying about the inner breaking of the connection cables resulted from entangling the connection cables.

Abstract: A system and a method for recognizing electronic elements are disclosed. The system includes at least two electronic elements and a control circuit board. The electronic elements include a fan, a light strip, or a combination of the fan and the light strip. The electronic elements are electrically connected in series. Each electronic element is provided with a recognition chip having a recognition code. The recognition chip of the next-preceding electronic element requests the recognition chip of the next-following electronic element to transmit the corresponding recognition codes back, so that the recognition chips of the electronic elements from first to last sequentially transmit the corresponding recognition codes back. The control circuit board is electrically connected with the first electronic element and sequentially receives the recognition codes according to the order of the at least two electronic elements connected in series.

Abstract: A shielded motherboard includes a circuit board, a first metal cover and a second metal cover. The circuit board is provided with a plurality of slots, a central processor, a chip set, a plurality of storage devices, a power supply module, a plurality of I/O ports and a plurality of connectors thereon. The first metal cover is penetrated with a plurality of openings, and a side of the first metal cover is recessed to form a notch. The first metal cover covers the circuit board. The notch exposes the central processor, the power supply module and the I/O ports, and the openings expose the slots, the chip set, the storage devices and the connectors. The second metal cover is arranged on the circuit board to shield the I/O ports.

Abstract: An illumination device for infinite mirroring, has a lighting module. A light-guiding frame guides a first light source of the lighting module to form light-guiding light source. The lower mirror reflects the light-guiding light source to form a reflection light source reflecting mirror images. The light-guiding ring has a light-guiding surface. The reflection light source incident on the light-guiding ring uniformly scatters to the light-guiding surface to form a ring-shaped light source. The lower mirror uses a first hollow interruption element to interrupt a part of the reflection light source to form a spaced layered light source. The upper mirror simultaneously reflects the ring-shaped light source and the spaced layered light source and uses the second hollow interruption element in the hollow cover to interrupt the ring-shaped light source to form a multilayered mirroring light ring.

Abstract: A cable managing device for a case is disclosed. The cable managing device includes at least one straight cable manager including a straight base whose sides respectively upward extend to form two first sidewalls and a first accommodation space. At least one curved cable manager includes a curved base whose outer side upward extends to form a second sidewall and a second accommodation space inside the second sidewall. The bottoms of two ends of the curved base are respectively provided with a second male tenon and a second female tenon. One of the tenons is fastened with one of a female tenon and a male tenon at two ends of the straight cable manager to connect the first accommodation space with the second accommodation space, thereby accommodating the cables.

Abstract: In a lightable fan structure for dissipating heat, a circuit board is arranged in a fan body, and the circuit board is sequentially provided with a first light-guiding frame and a second light-guiding frame, and the circuit board is provide with a plurality of side-light lighting elements. Every two side-light lighting elements is reversely arranged and spaced on a rim of the circuit board. A bottom of the first light-guiding frame is annually provided with a lighting reflection layer, and the side-light lighting elements are arranged below the lighting reflection layer. The lighting reflection layer reflects light sources of the side-light lighting elements to pass through an edge and a top of the first light-guiding frame and the second light-guiding frame, thereby uniformly scattering and forming a circular light source.

Abstract: The present invention discloses a lighting effect-controllable computer case, which comprises a computer case containing electrically-connected computer components, including a motherboard and a power source; a lighting controller electrically connected with the motherboard disposed inside the computer case; and at least one LED light strip disposed inside or outside the computer case, electrically connected with the lighting controller, including a plurality LEDs, and presenting different lighting effects according to at least one control signal generated by the lighting controller.