"Tiny Cooling Fan" in the background noise is no noise below 15 dBA measured echo chamber. Fan tested in free air operation, into the air one meter from the disposal of a noise meter. Fan noise level usually sound pressure level (SPL) of the octave band plot. Manual speed is actually a variable resistance, resistance to the minimum (or use a short jumper) when "Tiny Cooling Fan" of the minimum speed, maximum resistance (or unplugged jumper) fan at full speed. Tt Venus 12 type fan random attachment has two drives, one of which can be selected according to the situation. 3.5 can be installed on the main chassis front panel "floppy drive position, it can also be installed in the slot behind the position of the main chassis. Finally plug to the"Tiny Cooling Fan "red line socket can be.