AIO connection question

[Sharkley22]

Hello,

First of all I would like to apologise about potential grammatical errors because I am not native English speaker. I recently bought a be quiet silent loop 2 cooler. I have a question about connecting it to my motherboard, that is a gigabyte b550 gaming x v2. I connected the 3-pin connector from the pump to the CPU_OPT (in motherboard manual CPU_OPT is described as Water Cooling CPU Fan header) connector, and the 4 pin fans to the CPU_FAN with provided with cooler fan dongle (it basically enables to connect 2 fans into one header in the motherboard).

Generally, everything works fine, CPU temperatures do not exceed 65 degrees, but I am concerned about the correct connection of the above-mentioned cables to the motherboard. I have read that such AIO pumps require a constant 12 V power, and I do not know if it is provided. In addition, in the BIOS, I do not see the possibility of switching CPU_OPT to DC control, there is only AUTO and PWM to choose from.
I am asking for help if everything is connected correctly and will not break my pump.

[Sharkley22]

Well, it turns out that the pump can be connected to the CPU_OPT, without any issues. I don't want to start a new thread so I will ask here. 

I have checked pump specification from producer website and pump has to run between 9V-12V. I would like to set it on 9-10 volts in order to keep the pump silent, but i can't find option in Gigabyte BIOS to control fans via voltage, only RPM control is possible. In that situation how should I set it up? Right now motherboard set it to 1800 RPM and I am afraid thats too low because producer website says that pump speed is 2800 rpm. 

[SorryBella]

6 hours ago, Sharkley22 said:

I have checked pump specification from producer website and pump has to run between 9V-12V.

Huh? Most AIO pumps have moved to PWM nowadays, what kind of proprietary model of AIO do you have?