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Asrock B550M Pro4 Fan/pump headers
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shamanji View Drop Down
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    Posted: 30 Mar 2022 at 11:12pm
My girl friends pc has a cooler master masterliquid ml120r rgb, and the pump is connected to the cpu fan 1 header and running at full speed 2400rpm set in the bios, the 2x fans are connected with a Y-Splitter to cpu fan 2 Setup like this Cpu Fan 2 Control Mode : Auto | Cpu Fan 2 Setting : Silent | Cpu Fan 2 Temp Source : Monitor.

but accourding to cooler master that is not rightly connected, can anyone explain why?

My own cm 360 is also connected like my gf is.



FANS:
The radiator fans should always be connected to CPU Fan 1 and CPU Fan 2 (or CPU Fan OPT) on the Motherboard.

Single Radiator Fan:
Connect the fan to CPU Fan 1.

Two Radiator Fans via Y-Splitter:
Connect the adapter to CPU Fan 1. CPU Fan 2 / OPT can be left unused.

Two Radiator Fans without Y-Splitter:
Connect one fan to CPU Fan 1 and the other to CPU Fan 2 / OPT.

Four Radiator Fans via Y-Splitters:
Connect one adapter to CPU Fan 1 and the other adapter to CPU Fan 2.

PUMP:
Its recommended that the pump be connected to an alternative fan header on the motherboard such as System Fan 1, Chassis_Fan 1, or for newer motherboards a dedicated pump header.
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Xaltar View Drop Down
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Points: 24053 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2022 at 12:18am
The CPU Fan 2 header on your board has a setting for water pump mode. I suspect
that is what Cooler Master is concerned about. Connect the pump there and the fans
to CPU Fan 1. Then set the CPU Fan 2 to Water Pump mode (WP).

If you are worried, swap the pump to CPU Fan 2 and set it to water pump mode.
This switches the fan header to a voltage regulation mode as opposed to PWM.
Sorry, I didn't notice in your previous post that you had the fans and pump hooked up to the wrong fan headers.

PWM (Pulse Width Modulation) can damage the pump as it in essence switches power
to the header on and off rapidly to maintain a specific RPM (for fans). That is
why they recommend using the CPU Fan 2 header which can be switched to pump mode
(or DC mode if connected to a chassis fan header). It won't hurt the pump in the
short term but over continuous use it can. If the header was set to full speed
the risk of damage is small however.

Edited by Xaltar - 31 Mar 2022 at 12:22am
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shamanji View Drop Down
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Points: 391 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shamanji Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2022 at 1:06am
Ok, thanks ill try that :)
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Points: 391 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shamanji Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2022 at 1:33am
So Cooler Master Masterliquid Ml120R Rgb has 2 fans, 1 on each side of the radiator.

1.Two Radiator Fans via Y-Splitter:
Connect the adapter to CPU Fan 1. CPU Fan 2 / OPT can be left unused.

2.Two Radiator Fans without Y-Splitter:
Connect one fan to CPU Fan 1 and the other to CPU Fan 2 / OPT.

So wich of these 2 options should i use?
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Xaltar View Drop Down
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Points: 24053 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2022 at 2:23am
I would use CPU Fan 1 header with the splitter. With a push pull config, one on each
side of the rad, you want the speed balanced so a Y splitter on the same header
works well.
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Points: 391 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shamanji Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2022 at 3:41am
Ok, Thanks thats how it's runs now tho temps are the same as before :)


Also i got in my computer a Cooler master MASTERLIQUID ML360 RGB TR4 EDITION.

Should i also place pump on cpu fan 2 and set it to W_pump?

Should i also use 3 splitter for the 3 fans on the radiator and put those on cpu fan 1? these uses a pwm connector so i geuss they ajust them self in speed acourding to temp
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It's not necessary to split them on a 360 radiator. It's only with push pull I ever
use a splitter and even there, I use a splitter for each set (1 push 1 pull).
If you have a header that has a w/pump setting I would always recommend you use
it for the pump. As I said before, it doesn't really hurt anything not doing it
(provided it's set to full speed) but it also doesn't cost anything to do it right

It might give you a bit more life from your pump before it wears out and dies.
As to how long that will be, I guess it depends on the pump. My Corsair H105 is
still going strong after 5 years of near constant use. Many AIO manufacturers use
the same pumps as each other, just packaged/branded differently.
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but dos is there anything wrong with splitting 3 way on the Cooler master MASTERLIQUID ML360 RGB TR4 EDITION?

Dos it make the fans run worse or do i get worse coolinmg?

Should i put them each 3 of them on each fan header on the motherboard?
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On my girl friends motherboard cpu fan 1 can only be set to :

Custum/silent/standard/performance/full speed and only that, cant choose w_pump on that.

The rest of the fan headers on the motherboard can be set to w_pump mode.

The same goes for my motherboard onlybi have alt more headers on the motherboard asrock trx40 creator.

So is it wrong to use a 3 splitter on 3 x fans and on to 1 header the cpu fan 1 header?
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Xaltar View Drop Down
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I wouldn't recommend a 3 way splitter no. Each header is specifically designed to
provide a certain amount of power (wattage/amps). Overloading fan headers is never
advisable.

All that matters with the pump is that it is connected to a fan header with a
w/pump setting and is set to use it. It does not matter which header you use.

Edited by Xaltar - 31 Mar 2022 at 2:09pm
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