Need help setting up AIO

[alexinho2_]

Need help setting up AIO. 

To start, my motherboard is a B450 PRO VDH MAX and the aio/cpu cooler i’m setting up is the Cooler Master ML240L. My board has 2 SYS_FAN 4 pin connectors , and 1 CPU_FAN 4 pin connector. from reading the instruction it said to plug in the Splitter that came in the box on the CPU_FAN header I have, and plug in the 2 radiator fans to the splitter. My question is, where do I plug in my AIO since i don’t have a CPU_OPT header.

[Paolo Pandas]

3 minutes ago, alexinho2_ said:

Need help setting up AIO. 

To start, my motherboard is a B450 PRO VDH MAX and the aio/cpu cooler i’m setting up is the Cooler Master ML240L. My board has 2 SYS_FAN 4 pin connectors , and 1 CPU_FAN 4 pin connector. from reading the instruction it said to plug in the Splitter that came in the box on the CPU_FAN header I have, and plug in the 2 radiator fans to the splitter. My question is, where do I plug in my AIO since i don’t have a CPU_OPT header.

I would plug the AIO to the CPU_FAN header to let it control the pump speed - via PWM. I would then connect the two radiator fans to the SYS_FAN headers. These two fans can run at full speed to cool the radiators.  No need to use the splitters - unless you have another connector that need PWN to work.

[Hairless Monkey]

If it were me, I'd plug the pump into the CPU_Fan header, and the fans into one of the Sys_fan headers.

[alexinho2_]

23 minutes ago, Paolo Pandas said:

I would plug the AIO to the CPU_FAN header to let it control the pump speed - via PWM. I would then connect the two radiator fans to the SYS_FAN headers. These two fans can run at full speed to cool the radiators.  No need to use the splitters - unless you have another connector that need PWN to work.

okay i’ll do that, is there anything i need to change in my bios? Also i have 2 other fans besides the ones on the radiator. Since I only have 2 SYS_FAN headers, does that mean i’d need another splitter to have those 2 other fans connected to my other SYS_FAN header that’s not being used?

[alexinho2_]

27 minutes ago, HairlessMonkeyBoy said:

If it were me, I'd plug the pump into the CPU_Fan header, and the fans into one of the Sys_fan headers.

is there anything i need to do in bios to make sure they’re not running at less than what they should be?

[Hairless Monkey]

4 minutes ago, alexinho2_ said:

is there anything i need to do in bios to make sure they’re not running at less than what they should be?

If it were me, I'd adjust the CPU_Fan header's fan curve to go no lower than ~50%, maybe 40%. But, if the pump is quiet enough for you at 100%, then just set it to full speed.

[Paolo Pandas]

19 hours ago, alexinho2_ said:

okay i’ll do that, is there anything i need to change in my bios? Also i have 2 other fans besides the ones on the radiator. Since I only have 2 SYS_FAN headers, does that mean i’d need another splitter to have those 2 other fans connected to my other SYS_FAN header that’s not being used?

Two ways you can go about doing it. First, you can use a splitter and connect those fans to the SYS_FAN headers. But do be careful as it might overload the headers and damage your motherboard. Second, you can connect them directly to the power supply using some adapters - but that means the fans would be running at full speed all the time.

[Paolo Pandas]

19 hours ago, alexinho2_ said:

is there anything i need to do in bios to make sure they’re not running at less than what they should be?

If I remembered correctly, some BIOS will allow you to set it to AUTO (i.e. fan will speed up or slow down based on the CPU temperature). Some will allow you to set as "PERFORMANCE" (i.e. full speed) or "SILENCE" (i.e. around 25% to 50% of the speed). Pick your poison.