Patent ID: 8272852

Claim:
A fan assembly, comprising: a fan comprising at least one power line; a first plate mounted on one side of the fan, the first plate mounting an adjustable resistor assembly thereon, the adjustable resistor assembly connecting the at least one power line to a power source, the adjustable resistor assembly comprising a first resistor and a slider, the slider comprising a conducting point, one end of the first resistor connected to the power source, the at least one power line of the fan connected to the conducting point; wherein the slider is capable of sliding on the first side plate to have the conducting point contacting different parts of the first resistor to vary a resistor value of the adjustable resistor assembly; and a rack for receiving the fan and the first plate therein, wherein the first plate comprises a cover comprising a plurality of pins, the first resistor comprises a plurality of through holes, and the pins are secured in the through holes, and wherein the cover defines a cutout, the slider defines an engaging hole; a portion of the slider defining the engaging hole inserts through the cutout and is slidable in the cutout; the fan assembly further comprising a cap which comprises a clasp, and the clasp engages the engaging hole of the slider.