I want to change the fan speed. How many degrees are available for changing the fan speed?

The following models have a setting which can change the fan speed.

Applicable models
Product name Product number Fan speed
Switch-M16PWR PN23169A 4(High, Mid, Low, Min)
Switch-M8ePWR PN27089KA 3(High, Mid, Low)
Switch-M48eG PN28480K 2(High, Low)