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Heatsink fan stays on 24/7 (Not an issue but a... request?) :D

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This is unfortunately not possible on the older UM2, a possible cure is to change the fan to a Sunon that is very quite.

The newer UM2s come with a new board that has the ability to control the fan and turn it off when the temp is lower than 40°c (with firmware 15.04), so the only way i know would be to buy that new board but it's quite expensive for just that purpose...

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