Heat dissipating fan with manual adjustment rotational speed

A heat dissipating fan with manual adjustment rotational speed, characterized with:

• a rotational speed adjustment device or switch provided in a corner screw hole at a front or back of a heat dissipating fan frame, the rotational speed adjustment device or switch being electrically connected to a power source of the fan by means of a power cord or other conductive metals, the adjustment device or switch being extended with a knob that is individually exposed out of the fan frame, the heat dissipating fan may be installed in any space that requires heat dissipation or to an outer periphery of a unit casing, to allow a user to adjust rotational speed of the heat dissipating fan at one's desire at any time, said heat dissipating fan with manual adjustment rotational speed includes one of the following:
• a heat dissipating fan that is extruded from aluminum or injection molded by plastic, in the plastic heat dissipating fan, the rotational speed adjustment device or switch and a thread head are placed in a casing at an in-between space between aligning screw holes of a plastic frame made by plastic injection molding, where the casing having the rotational speed adjustment device or switch and the thread head is placed into the above in-between space and then secured by a screw from a back thereof.

A heat dissipating fan with manual adjustment rotational speed, characterized with:

• a rotational speed adjustment device or switch provided in a corner screw hole at a front or back of a heat dissipating fan frame, the rotational speed adjustment device or switch being electrically connected to a power source of the fan by means of a power cord or other conductive metals, the adjustment device or switch being extended with a knob that is individually exposed out of the fan frame, the heat dissipating fan may be installed in any space that requires heat dissipation or to an outer periphery of a unit casing, to allow a user to adjust rotational speed of the heat dissipating fan at one's desire at any time, said aluminum extruded heat dissipating fan or plastic heat dissipating fan of the heat dissipating fan with manual adjustment rotational speed is adapted to be installed at any location in a computer unit, or an inner edge of a front, lateral or back of a computer housing;
• and wherein the knob or a handle extending from the adjustment device or switch extends outwards, or is of an individual component to be inserted from the outside, to allow the user to adjust the rotational speed of the aluminum extruded heat dissipating fan or plastic heat dissipating fan by one's fingers from an exterior of the computer unit at any time.