[SOLVED] Cant control fan hub speed

[Emir_Zira]

Ok listen up, this is weird but can someone solve this cuz i dont understand it.
I bought a fan hub that looks like this :

https://imgur.com/P9aYOq0

View: https://i.imgur.com/P9aYOq0.png

https://imgur.com/uITKraA

View: https://i.imgur.com/uITKraA.png

Now the fans i have are all 3pin fans 120mm.
the hub came with 4 pins, but i can still use 3pin fans on them, but for some reason i cant control them, i put the 1st one in red header which sends signal to all others.
and they run full speed all the time, but heres the weird part.

my old setup before i bought fan hub, was i had a splitter heres the picture :

https://imgur.com/kBQKVva

View: https://i.imgur.com/kBQKVva.png

now i connect that splitter obv to Motherboard and as you can see i can plug 2 fans with that splitter(120mm) and the rest i had to plug with psu via molex.
But as you can see the splitter is all 3 pin and the fans too, but I CAN control them via BIOS and with speedfan(software) in windows with no problems whatsoever.
my Q is , why I cant do same with fan hub ? I can control those 2 fans with splitter no problem, but with fan hub I cant.
whats the solution ?
Do I buy one , 4 pin fan ? and put it in red header so i can control other 3 pin fans also connected with fan hub.
thanks.

 

[kerberos_20]

thats because you bought PWM fan controller, which needs 4pin fans, it reads pwm signal from mainboard, it wont read voltage from mainboard as it has its own 12v power (sata power connector)
3pin fan gets speed changed based on voltage, you cant control it though bios with this controller

if you buy 1 4pin fan, than only that one will work, other 3pin fans will work at full speed

 

[Emir_Zira]

thats because you bought PWM fan controller, which needs 4pin fans, it reads pwm signal from mainboard, it wont read voltage from mainboard as it has its own 12v power (sata power connector)
3pin fan gets speed changed based on voltage, you cant control it though bios with this controller

if you buy 1 4pin fan, than only that one will work, other 3pin fans will work at full speed

Aham , ok thats makes sense, i was just quick on buying something . my bad.
but can you tell me if this one would work heres the pic :

https://imgur.com/v2CNsGX

View: https://i.imgur.com/v2CNsGX.jpg

this hub is all 3pin, will i be able to control this one via bios AND in windows.
thanks

 

[kerberos_20]

Aham , ok thats makes sense, i was just quick on buying something . my bad.
but can you tell me if this one would work heres the pic :

https://imgur.com/v2CNsGX

View: https://i.imgur.com/v2CNsGX.jpg

this hub is all 3pin, will i be able to control this one via bios AND in windows.
thanks

you wont be able to control this one with bios, you see in middle that switch? thats voltage regulator to reduce faan speed (low/off/high)
with 3pin fans you wont find any fan controller which can be bios controlled, for that you can only use fan splitters
or change your fans to 4pin PWM

 

[Paperdoc]

You have two choices, but we don't have enough info to get into details of using several Splitters with several mobo headers.

So the second option is one very particular Hub, the Phanteks Universal Fan Controller, PH-PWHUB_02

https://www.amazon.com/Phanteks-Universal-Fan-Controller-PH-PWHUB_02/dp/B07NHQRCRM/ref=sr_1_1?crid=KVDNR8UM8TR1&dchild=1&keywords=phanteks+universal+fan+controller%2C+ph-pwhub_02&qid=1630164090&sprefix=Phanteks+universal%2Caps%2C193&sr=8-1

It is unique because on some of it ports it "translates" the PWM signal set it gets from a mobo fan header into the right signals to control 3-pin fans. It comes with a manual control box with three buttons for use with NO connection to a mobo fan header - do NOT use this part. Connect the Hub to a SATA power output from the PSU, then run the supplied cable from the Hub's input port to a mobo SYS_FAN header. In BIOS Setup, that header MUST be configured to use the new PWM Mode so the Hub gets the right signals. Then you plug in all your 3-pin fans to the Hub's 3-pin ports. EXCEPT that ONE of your fans must be plugged into the FAN1 port so that its speed can be sent back to the mobo. This one port can automatically configure itself for either fan type. So in total the Hub provides four 3-pin fan ports. IF you need more than that, you can use a Splittter on any 3-pin output port to connect more than one fan to that port.

With this Hub, you can connect four (maybe more) 3-pin fans to one mobo 4-pin header that is using PWM Mode, and the system WILL control the speeds of all those 3-pin fans.