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I think dust removal using different fan speeds does not work. Dust particles won't "fly away" just because the propeller is turning fast. Especially since the propeller is getting to its max speed in a curve/ramp, not instantly.

Fan reverse is not possible! (These fans a DC fans and there is no way a software could reverse polarity).

Also, you don't want the dust from the fan thrown in to the air duct. It could lead to a clogging or narrowing and less air flow.

All I can imagine that would remove dust is to open the machine (on my Lenovo Thinkpads, series T & X) it has always been very simple. I usually use a vacuum cleaner (on lowest power) or compressed air (preferred) to get rid of dust in electrical devices.

Look for How-to's or videos such as this to find out how to open your laptop and reach to the fan.

I think dust removal using different fan speeds does not work. Dust particles won't "fly away" just because the propeller is turning fast. fast or faster than before. Especially since the propeller is getting to its max speed in a curve/ramp, not instantly.

Fan reverse is not possible! (These fans a DC fans and there is no way a software could reverse polarity).

Also, you don't want the dust from the fan thrown in to the air duct. It could lead to a clogging or narrowing and less air flow.

All I can imagine that would remove dust is to open the machine (on my Lenovo Thinkpads, series T & X) it has always been very simple. I usually use a vacuum cleaner (on lowest power) or compressed air (preferred) to get rid of dust in electrical devices.

Look for How-to's or videos such as this to find out how to open your laptop and reach to the fan.