Hello
i bought a 1.74 amp delta fan and my motherboard supports 1 amp only, so i removed the red and black wires and connected it to the molex and the yellow and blue wires to the motherboard's system fan header, the fan works and i can see the fan's speed but can't control it's speed, neither through bios or fan control software, i thought the fan is bad, so i tried another pwm fan that is less than 1 amp using the same method and it did the same thing, so i connected that fan directly to the motherboard and pwm worked fine, if i disconnect the red and black wires from the fan header pwm doesn't work, anyone knows why this is happening?my mb is H81M-S2PV rev. 1.0
i bought a 1.74 amp delta fan and my motherboard supports 1 amp only, so i removed the red and black wires and connected it to the molex and the yellow and blue wires to the motherboard's system fan header, the fan works and i can see the fan's speed but can't control it's speed, neither through bios or fan control software, i thought the fan is bad, so i tried another pwm fan that is less than 1 amp using the same method and it did the same thing, so i connected that fan directly to the motherboard and pwm worked fine, if i disconnect the red and black wires from the fan header pwm doesn't work, anyone knows why this is happening?my mb is H81M-S2PV rev. 1.0