Abstract: The present invention integrates an amplifier with a speaker into the portable audio system. Due to the design of the structure, a notebook can be installed on the portable audio system. The portable audio system includes a body, at least one amplifier unit, at least one input/output interface unit and a circuit integration unit. The circuit integration unit includes an interface control unit, an amplifying circuit unit and an equalizing circuit unit. The amplifier can be rotated to any angle to provide multi-channel and surround sound effects. Furthermore, the portable audio system has a heat sink installed therein to lower the portable audio system's temperature.

Abstract: A plug-and-play hard disk read/write drive includes a body, a control circuit board, and a connecting interface unit. The body has hard disk insertion slots and a power supply unit. The control circuit board is arranged in the body and is electrically connected with the connecting interface. The connecting interface unit has hard disk adapting interfaces corresponding to the hard disk insertion slots. The hard disk adapting interface has a first connecting end and a second connecting end. The hard disk is accommodated in the hard disk insertion slot, and is connected to the hard disk adapting interface. The power supply unit is electrically connected on the control circuit board for controlling a power switch of the connecting interface unit. The present invention allows the hard disks of different specifications to be accommodated in the hard disk read/write drive for transmitting and accessing data via the hard disk adapting interface.

Abstract: The present invention integrates an amplifier with a speaker into the portable audio system. Due to the design of the structure, a portable electronic device can be installed on the portable audio system. The portable audio system includes a body, at least one amplifier unit, at least one input/output interface unit and a circuit integration unit. The circuit integration unit includes an interface control unit, an amplifying circuit unit and an equalizing circuit unit. The amplifier can be rotated to any angle to provide multi-channel and surround sound effects. Furthermore, the portable audio system has a heat sink installed therein to lower the portable audio system's temperature.

Abstract: A cooling apparatus has a housing having housed therein an axial flow fan, a display panel located on the front side of the housing, and a control circuit assembly mounted inside the housing and adapted to drive the axial flow fan subject to the temperature level detected, and also to drive an LED display unit of the display panel to indicate the detected temperature level.

Abstract: A device for a computer fan and case light control has a shell, a microphone, a sound-control adjustment component, a sound detection circuit, a pulse reference circuit, several sets of fan drive circuits, a control circuit, a voltage conversion circuit and a CCFL. The control circuit is respectively connected with the pulse reference circuit, the sound detection circuit, the fan drive circuits and the voltage conversion circuit. The sound detection circuit is respectively connected with the microphone and the sound-control adjustment component. The output terminal of the voltage conversion circuit is connected with the CCFL. A user can control the on/off state or sensitivity of sound through the sound-control adjustment component, and can control the CCFL through sound to provide greater amusement when the device for a computer fan and case light control is assembled on a computer case.