Abstract: The disclosure provides a liquid-cooling device and an electronic device. The liquid-cooling device includes an accommodation housing and a liquid-cooling assembly. The accommodation housing has an accommodation structure. The liquid-cooling assembly includes at least one liquid-cooling heat exchanger, a cold plate and a tubing. The at least one liquid-cooling heat exchanger is located in the accommodation structure. The cold plate is covered on the accommodation housing and covers the accommodation structure. The tubing is connected to the at least one liquid-cooling heat exchanger and penetrates through the cold plate.

Abstract: An immersion heat dissipation system having two circulations includes a tank body, a first working fluid, a liquid heat exchanger, a first circulation pipe unit, a first fluid driving unit, a gas transfer apparatus, a gas heat exchanger, a second circulation pipe unit, a second working fluid, and a second fluid driving unit. The tank body accommodates the first working fluid and the liquid heat exchanger immersed in the first working fluid. The first circulation pipe unit is in communication with the tank body to form a first circulation path. Through the second circulation pipe unit, the liquid heat exchanger is connected to the gas heat exchanger to form a second circulation path. The first working fluid and the second working fluid are driven by the first fluid driving unit and the second fluid driving unit, respectively, to flow toward the liquid heat exchanger for heat dissipation.

Abstract: Provided is a portable docking device. The portable docking device may convert an USB Type-C port to another type of port. The portable docking device can further receive electric power from a mobile device connected with the portable docking device, and the pico-projecting unit can receive the electric power to project an enlarged screen synchronous to a screen displayed on the mobile device. Therefore, the screen displayed on the mobile device can be enlarged, and viewers can watch the enlarged screen without the viewers' sight being blocked. Further, the user of the portable docking device does not need to bring a power adaptor, and convenience and portability of the portable docking device can be improved.

Abstract: Provided is a portable docking device. The portable docking device may convert an USB Type-C port to another type of port. The portable docking device can further receive electric power from a mobile device connected with the portable docking device, and the pico-projecting unit can receive the electric power to project an enlarged screen synchronous to a screen displayed on the mobile device. Therefore, the screen displayed on the mobile device can be enlarged, and viewers can watch the enlarged screen without the viewers' sight being blocked. Further, the user of the portable docking device does not need to bring a power adaptor, and convenience and portability of the portable docking device can be improved.