Abstract: A hidden image capturing device is applied to a display. The hidden image capturing device has a shell, a control module, a slide module, and an image capturing module. The slide module is disposed in the shell and controlled by the control module for sliding. Besides, the slide module enables the image capturing module to extend out or withdraw into the shell when it slides.

Abstract: A hidden image capturing device is applied to a display. The hidden image capturing device has a shell, a control module, a slide module, and an image capturing module. The slide module is disposed in the shell and controlled by the control module for sliding. Besides, the slide module enables the image capturing module to extend out or withdraw into the shell when it slides.

Abstract: An electronic device having a replaceable casing panel comprises a first portion and a second portion. The first portion includes a gliding member having a plurality of second positioning elements corresponding to a plurality of first positioning elements, and each second positioning element includes a fixing element for fixing the gliding member in the first portion and restricting the moving direction of the gliding member, and the gliding member includes a first panel that slides with the gliding member. The second portion includes a second panel having a plurality of third embedding elements and a plurality of fourth embedding elements embedded with each other, and the second portion includes a plurality of first embedding elements and a plurality of second embedding elements, such that the first panel can be pushed to form a gap for replacing the second panel.

Abstract: A woofer module is used for outputting alow-frequency audio signal, and can be inserted into and removed from anexpansion slot of a portable computer. The woofer module has a housing, a speaker unit positioned inside the housing for generating the audio signal, a predetermined space positioned inside the housing for resonating the audio signal, and a bass reflex duct positioned inside the housing which is connected to an output vent of the predetermined space and an output vent of the housing for transmitting the audio signal from the output vent of the housing to an ambientenvironment.

Abstract: A woofer module is used for outputting alow-frequency audio signal, and can be inserted into and removed from anexpansion slot of a portable computer. The woofer module has a housing, a speaker unit positioned inside the housing for generating the audio signal, a predetermined space positioned inside the housing for resonating the audio signal, and a bass reflex duct positioned inside the housing which is connected to an output vent of the predetermined space and an output vent of the housing for transmitting the audio signal from the output vent of the housing to an ambientenvironment.