Abstract: A computer includes a computer case, a motherboard, a cable box, a power supply and a peripheral component. The computer case has a first disk drive slot and a second disk drive slot within the inner portion thereof. The cable box is installed in the first disk drive slot. The power supply is connected with the cable box through a power cord. The peripheral component is installed in the second disk drive slot, wherein electricity is transmitted from the power supply to the peripheral component through the cable box.

Abstract: A foldable computer chassis includes a first plate having multiple first fixing shafts and second fixing shafts, multiple second plates connected to two opposite edges of the first plate by the first fixing shafts, and multiple third plates movably and rotatably connected to the other two opposite edges of the first plate by the second fixing shafts. Each third plate has a fixing elastic element. When the computer chassis is folded, the second plates are rotated to lie on the first plate, and the third plates are moved and rotated to lie on the second plates. When the computer chassis is assembled, the second plates are rotated to stand on the first plate, and the third plates are moved and rotated to stand on the first plate. The fixing elastic elements on the third plates are provided for fastening the second plates with the third plates.

Abstract: The invention discloses a power supply with a frequency conversion function. The power supply is connected with a motherboard. The power supply includes a pulse width modulation (PWM) controller, a direct current-direct current (DC-DC) converter, and a switch resistor modulation circuit. The PWM controller generates a PWM signal. The DC-DC converter is connected with the PWM controller and the motherboard, and it generates a plurality of voltages to the motherboard after it receives the PWM signal. The switch resistor modulation circuit provides a first resistance value and a second resistance value switched to correspondingly generate a first switching frequency or a second switching frequency. The second resistance value is larger than the first resistance value. The second switching frequency is smaller than the first switching frequency.

Abstract: A computer includes a computer case, a motherboard, a cable box, a power supply and a peripheral component. The computer case has a first disk drive slot and a second disk drive slot within the inner portion thereof. The cable box is installed in the first disk drive slot. The power supply is connected with the cable box through a power cord. The peripheral component is installed in the second disk drive slot, wherein electricity is transmitted from the power supply to the peripheral component through the cable box.

Abstract: A foldable computer chassis includes a first plate having multiple first fixing shafts and second fixing shafts, multiple second plates connected to two opposite edges of the first plate by the first fixing shafts, and multiple third plates movably and rotatably connected to the other two opposite edges of the first plate by the second fixing shafts. Each third plate has a fixing elastic element. When the computer chassis is folded, the second plates are rotated to lie on the first plate, and the third plates are moved and rotated to lie on the second plates. When the computer chassis is assembled, the second plates are rotated to stand on the first plate, and the third plates are moved and rotated to stand on the first plate. The fixing elastic elements on the third plates are provided for fastening the second plates with the third plates.

Abstract: A switch power supply includes an AC/DC converter, a DC/DC converter, a battery charge-discharge switching circuit, and a detecting and controlling circuit. The AC/DC converter receives an input AC voltage and converts the input AC voltage into a DC voltage. The DC/DC converter converts the DC voltage into several working voltages required for operating the electronic device. The battery charge-discharge switching circuit is selectively connected to the AC/DC converter or the DC/DC converter and connected to the battery. The detecting and controlling circuit detects the input AC voltage. If the input AC voltage is abnormal, the detecting and controlling circuit issues a control signal to the battery charge-discharge switching circuit. In response to the control signal, the battery issues a discharge voltage to the DC/DC converter and the discharge voltage is converted into the working voltages by the DC/DC converter.

Abstract: A fixing structure is for a detachable electronic assembly. The detachable electronic assembly has at least one first hole. The fixing structure includes a housing, a first movable member, and a second movable member. In this case, the housing has at least one guiding bar, at least one fist connecting portion, and a first opening opposite to the first hole. The first movable member has a second opening and a second connecting portion. The first movable member is pivoted on the housing, and the second connecting portion connects with the first connecting portion. The second movable member has a third opening and a protrusion. The second movable member moves along the guiding bar caused by the rotation of the first movable member, so that the protrusion is inserted into the first opening and the first hole. An apparatus having a fixing structure is also provided.

Abstract: A fixing structure is for a detachable electronic assembly. The detachable electronic assembly has at least one first hole. The fixing structure includes a housing, a first movable member, and a second movable member. In this case, the housing has at least one guiding bar, at least one fist connecting portion, and a first opening opposite to the first hole. The first movable member has a second opening and a second connecting portion. The first movable member is pivoted on the housing, and the second connecting portion connects with the first connecting portion. The second movable member has a third opening and a protrusion. The second movable member moves along the guiding bar caused by the rotation of the first movable member, so that the protrusion is inserted into the first opening and the first hole. An apparatus having a fixing structure is also provided.