Speedfan does not detect my PWM fans

rbolya

Prominent
Dec 30, 2017
2
0
510
I have noticed that for many people, speedfan seems to work for them just fine. For me, it does not detect any of my fans, although it does detect all of the temp readings. Basically, Speedfan is completely empty except for the temp readings: https://imgur.com/a/tjZat

Motherboard: z170x Gaming-7 - https://goo.gl/gsLv2Z
Fans: 2x Red LED AF120 Corsair Fan - https://goo.gl/T4zHwi
2x Blue LED AF120 Corsair Fan - https://goo.gl/MuJ6BB
1x Sickleflow 120 Cooler Master Fan - https://goo.gl/dKMSYF
1x Hyper Evo 212 Cpu Fan - https://goo.gl/jdLxhz
Fan Hub: Silver Stone PWM Fan Hub - https://goo.gl/EqBVt4

Speedfan scan report:
Win9x:NO 64Bit:YES GiveIO:NO SpeedFan:YES
I/O properly initialized
Linked ISA BUS at $0290
Linked Intel Sunrise Point SMBUS at $F000
Found nVidia GeForce GTX 960
Linked nVidiaI2C0 SMBUS at $3D403E3F
Linked nVidiaI2C1 SMBUS at $3D403637
Linked nVidiaI2C2 SMBUS at $3D405051
Scanning ISA BUS at $0290...
SuperIO Chip=IT8628E
Linked ISA BUS at $0A40
Scanning Intel SMBus at $F000...
Scanning I2CNVidia SMBus at $3D403E3F...
Scanning I2CNVidia SMBus at $3D403637...
Scanning I2CNVidia SMBus at $3D405051...
Scanning ISA BUS at $0A40...
IT8628E found on ISA at $A40
Found INTEL SSDSC2BW240H6 on AdvSMART
Found ST500DM002-1BD142 on AdvSMART
Found ST3750640AS on AdvSMART
INFO : SCSI DISABLED by user or because iaStorA.sys is installed
Found ACPI temperature
Found Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
End of detection
Loaded 0 events
CLOCK GENERATOR set to nVidia nForce2
 
Solution
When you use ANY fan hub or splitter, it can return to the mobo header ONLY ONE fan speed signal. A fan header can only deal with one such signal. ALL others on that Hub are ignored completely and you will never "see" them anywhere. With the Silverstone Hub, the common way to connect it is to plug its fan lead into the CPU_FAN header, then plug the actual CPU cooling fan into its Port #1, the special marked one. Then only that CPU fan's speed will be observable. The alternative when using some mobos is to leave the actual CPU cooling fan only plugged directly into the CPU_FAN header where it will be observable. Then the Hub plugs into a mobo SYS_FAN header, and the case vent fans all plug in to it. In that case, you MUST plug one of...

Paperdoc

Polypheme
Ambassador
When you use ANY fan hub or splitter, it can return to the mobo header ONLY ONE fan speed signal. A fan header can only deal with one such signal. ALL others on that Hub are ignored completely and you will never "see" them anywhere. With the Silverstone Hub, the common way to connect it is to plug its fan lead into the CPU_FAN header, then plug the actual CPU cooling fan into its Port #1, the special marked one. Then only that CPU fan's speed will be observable. The alternative when using some mobos is to leave the actual CPU cooling fan only plugged directly into the CPU_FAN header where it will be observable. Then the Hub plugs into a mobo SYS_FAN header, and the case vent fans all plug in to it. In that case, you MUST plug one of those case fans into Port#1 where it will be observable, but still all the others will not be. This is likely NOT a Speedfan issue. It is a consequence of the design of how fan speeds can be accessed.
 
Solution

rbolya

Prominent
Dec 30, 2017
2
0
510
Ok, disregard the fan hub, I removed that and connected my 4 corsair fans into the system fan hubs, one of them into the cpu_OPT
after all this speedfan still does not notice my fans while HWMoniter does.