Question 3 fans connected to single motherboard header, 2 Kolink, one Arctic P12 is it safe?

[MarkT3001]

I have a Kolink Citadel Mesh case (non RGB version) with the included two front Kolink branded fans connected as slaves to an Akasa 3 way fan spliter with additional SATA cable PSU input power, plugged into a ASUS PRIME A520M-K motherboard fan header with a ARCTIC P12 PWM 120mm fan as the master fan.

Question is will this work mixing two types of fan, the two Kolink ones as 3 pin slaves and the Arctic as the master 4 pin PWM one and is it safe or doesn't it really make a difference?

 

[Lutfij]

Akasa 3 way fan spliter with additional SATA cable PSU input power
Got a link to said harness?

plugged into a ASUS PRIME A520M-K motherboard fan header
Your motherboard merely has 2x 4pin fan headers, which ones are the case fans occupying?

 

[MarkT3001]

Akasa 3 way fan spliter with additional SATA cable PSU input power
Got a link to said harness?

plugged into a ASUS PRIME A520M-K motherboard fan header
Your motherboard merely has 2x 4pin fan headers, which ones are the case fans occupying?

Akasa FLEXA FP3S 3 Fan PWM Controller (AK-CBFA06-30)​

 

[MarkT3001]

Connected to single motherboard chassis fan header

 

[MarkT3001]

Akasa 3 way fan spliter with additional SATA cable PSU input power
Got a link to said harness?

plugged into a ASUS PRIME A520M-K motherboard fan header
Your motherboard merely has 2x 4pin fan headers, which ones are the case fans occupying?

https://www.akasa.co.uk/update.php?tpl=product/product.detail.tpl&model=AK-CBFA06-30

 

[CountMike]

I have a Kolink Citadel Mesh case (non RGB version) with the included two front Kolink branded fans connected as slaves to an Akasa 3 way fan spliter with additional SATA cable PSU input power, plugged into a ASUS PRIME A520M-K motherboard fan header with a ARCTIC P12 PWM 120mm fan as the master fan.

Question is will this work mixing two types of fan, the two Kolink ones as 3 pin slaves and the Arctic as the master 4 pin PWM one and is it safe or doesn't it really make a difference?

You might have trouble with speed reporting and control if all fans on one header are not exactly same. It's more acute with PWM fans, some may not work at all.

 

[Lutfij]

You'll notice that your PWM splitter's connectors only have 4 pin on one of the female connector, since it's impossible to have one motherboard header recognize more than one fan running on it. So one of your fans will be reporting telemetry data and the BIOS will manage the speed at which the fans rotate.

The issue with PWM fan splitters like the one you have will mean that 3pin fans will run at full speed since they are being fed with 12v. Would be a good idea to get PWM fans to have them managed off on header. If you have 2x3pin fans then you can use a 3pin fan spitter like this;
https://www.amazon.com/Splitter-Extension-Sleeving-Connectors-Length/dp/B00C46DX4S

As for your thread titles question, you're good to go since the SATA power connector will deliver the power all your fans need without hindrance.

 

[Paperdoc]

Maybe this can help you understand how these devices work. First it appears that ALL of your fans are the newer 4-pin PWM type. In that design the fan is supplied with a constant 12 VDC power supply on Pin #2, plus a PWM speed control signal on Pin #4. EACH fan has a little chip that uses that PWM signal to modify the flow of current from the +12 VDC supply line through the motor windings to adjust speed.

All fan motors generate their own speed signal (a series of 5 VDC pulses) to send back to the mobo header for counting. However, the header can deal with only ONE speed signal. So any Splitter or Hub will send back the speed of only ONE of its fans and NOT send any other fan's speed signal. The speeds of all those "others" is never known anywhere. This has NO impact on ability to CONTROL the speed of each fan. The most common way to accomplish this is simply to omit Pin #3 of the output connectors of a Splitter or Hub for most of the fans, and have that pin present only in ONE output connector. Some call this one output the "Master" (and the others as "Slaves") but that is not really true - that one fan does NOT control anything. It simply is the only one allowed to send its speed back to the host header.

Because of differences in electrical details, IF you connect an older 3-pin fan to a mobo 4-pin fan header (or Splitter or Hub) the 3-pin fan's speed cannot be controlled, and it always runs full speed. However, all your fans are NOT that type - they are 4-pin fans and their speeds WILL be controlled by the PWM signal sent from the header though the Splitter or Hub on Pin #4.

The AKASA device you link to is what I call a Hub, but the important part is that power for all its fans is supplied directly from the PSU via the SATA power connector, and it does NOT depend on power from the mobo header to run the fans. So your fans are NOT limited by the mobo header's power output limit. It DOES get the mobo's speed control PWM signal and distribute that to all its fans, so they ALL with be speed controlled that way. For that reason in BIOS Setup the configuration of the mobo fan header used must be set to PWM Mode, not to Auto or Voltage or DC. Only ONE of the fans (the one plugged into the only output with all 4 pins) will report its speed to the mobo header.

Just to reiterate and be clear: OP wrote of using "3-pin slaves". I think this is a mis-labelling. The two stock fans supplied with that case are spec'd as 4-pin PWM fans (just like the third Arctic fan OP is using). I believe OP said "3-pin slaves" to refer to the fact that the two stock fans are connected to 3-pin output connectors on the AKASA Hub. That does not make them 3-pin Voltage Control fans. It means only that their speed signals do not get fed back to the mobo host header.