Abstract: A power supply device including a circuit board securely mounted inside a housing, an AC receptacle securely securely fixed to one side of the housing for connecting city power supply to the circuit board, an electric connector and a socket securely fixed to the housing and electrically connected in parallel to the DC output terminal of the circuit board for connection to the battery chamber of a mobile computer directly or the external power input socket of a mobile computer by a cable.

Abstract: A diskdrive case including a top cover shell having two longitudinal sliding grooves and a rear opening, a bottom cover shell having two longitudinal sliding tracks and a rear opening, a first locating plate fastened to the rear opening of the top cover shell to hold a plurality of arched metal contact spring leaves, and a second locating plate fastened to the rear opening of the bottom cover shell to hold a plurality of curved metal contact spring leaves, wherein by engaging the longitudinal sliding tracks of one diskdrive case with the the longitudinal sliding grooves of another, a plurality of diskdrive cases can be connected in a stack; the arched contact metal spring leaves of one diskdrive case are respectively disposed in contact with the curved contact metal spring leaves of another when a plurality of diskdrive cases are connected in a stack.

Abstract: A CPU radiating flange mounting device including two hangers respectively made from a springy wire rod and pivotably connected to two opposite sides of a radiating flange for hanging on projecting rods on two opposite sides of a CPU holder to secure the radiating flange to the CPU holder above a CPU, which is mounted within the CPU holder.

Abstract: A CPU heat dissipating apparatus including a metal PC board, a heat sink welded to the metal PC board, and a fan installed in the metal PC board and disposed within a circular center opening on the heat sink wherein the metal PC board has a plurality of radial welding points, and a printed circuit, the printed circuit including a fail-safe circuit for the protection of the fan. The heat sink has a plurality of radial flanges radially and alternatively spaced around its circular center opening at two different elevations and welded to the welding points of the metal PC board, and a plurality of holes and notches on the radial flanges for passing the electronic components and conductors of the printed circuit to separate them from contact with one another.

Abstract: A CPU cooling fan mounting structure including a motor-driven cooling fan, a heat-resisting plastic mount, and a heat sink fixed to the CPU. The heat sink having a mounting hole, which receives the heat-resisting plastic mount. The heat-resisting plastic mount fitting the mounting hole and being coupled to one end of the motor-driven cooling fan. The size of the heat-resisting plastic mount being slightly bigger than the mounting hole so that the heat-resisting plastic mount is firmly retained to the base plate of the heat sink when it is fitted into the mounting hole.

Abstract: A heat dissipating case for a DC power supplier. The case includes multiple integral heat sinks, and a receptacle filled with thermal silicon rubber for the transformer. A base of the case is formed from cast aluminum.

Abstract: A CPU heat sink holding-down device including a CPU holder, a CPU mounted on the CPU holder, and a heat sink fastened to the CPU holder to hold down the CPU, wherein the heat sink has a fixed loop-like hanger pivotably disposed at one vertical side thereof and hung on a first retainer rod at one vertical side of the CPU holder, two locating bar extended out of an opposite vertical side thereof, a screw rod connected between the locating bars, a movable loop-like hanger turned about said screw rod and hung on a second retainer rod at an opposite vertical side of the CPU holder, and a curved spring plate connected to the movable loop-like hanger for lifting the movable loop-like hanger from the second retainer rod.

Abstract: A CPU heat sink mounting structure including a CPU, a heat sink attached to one side of the CPU to hold an electric fan for dissipating heat from the CPU, and a plurality of clamps fastened to the heat sink to hold down the CPU, each clamp having a forked mounting portion fastened to a respective retaining hole on the heat sink and a clamping portion clamped on the CPU to hold down the CPU on the heat sink.

Abstract: A housing consisted of a cover covered on a case to hold a computer power supply unit, wherein a storage space is defined between an upright front panel and an upright back panel on the case above a flat top wall of the cover for mounting a hard disk drive by an angle bar and screws.