Question Is connecting a led fan to both motherboard and psu ok?

[MichaelKnight]

I have built a new pc. The case I have bought is a Thermaltake Kandalf(it's a bit old model but it was almost the only pc case which was compatible with my criterias that I was able to find in my country).

It has a blue led fan and the other fans aren't led fans. I connected the non-led fana to the psu, they don't have headers for motherboard.

I connected the led fan to both psu and motherboard using it's power cable and motherboard 's "sysfan" connector. It' s working well. But I've read on internet that fans shouldn't be connected to both psu and motherboard at the same time. But if I connect the led fan only to the motherboard' s sysfan connector and unplug psu cable, it's blue led not working?

The other fans(non-led) have only power cable and I connected them to psu and they are working well. But I am not sure how I should connect this blue led fan...

 

[Lutfij]

It's instances liek this that you need to include images of what you're working with. Last I recall about that case is the fan had a LED connector that was molex, while the fan also had an rpm sense connector that went onto the motherboard's header.

If so, you should think about swapping the fans to something 2023, then again, if I were you I'd look into a new case, something that is keeping with the times in terms of connectivity and hardware compatibility. To also add, you would see better thermals with cases these days, ones with open front panels.

I built around the Thermaltake Armor Jr. and I still have the case in it's original box. Retired it after noticing that latter cases were better performers not to mention the front panel connectivity updates.

 

[MichaelKnight]

Thanks for your answer.

Last I recall about that case is the fan had a LED connector that was molex, while the fan also had an rpm sense connector that went onto the motherboard's header

I will take a photo of the fan. But if you remember it right, then there seems no problem, plugging the molex into psu and the header into motherboard, it's working without problem.

I want to continue using this case, because I want to be able to continue using my internal bluray burner as internal, I have lots of cds, dvds and I dont want to use an external bluray burner/reader. This was the only case which has a 5.25 drive bay, is full tower and from one of my favourite case brands, that I could be able to find in my country. All of these three criterias are very important for me, though compatibility with newer hardware is important of course but I wasn't able to find a newer pc case which has the three criterias I mentioned, in my country.