The two categories of products I’m thinking of are these: Thermalright PWM Fan Hub PC Case Fan Controller 4 Pin, Support 10 Computer CPU Fans Splitter (PWM) https ...

Not sure if this is an issue with the fan splitter I had to use, or the motherboard, but it irks me. Asus B550/5800X/Noctua NH-D15 CHROMAX cooler. While it's probably not radically affecting the ...

which includes two 3-way PWM splitter cables. These cables allow users to connect and control multiple fans from a single motherboard fan header, simplifying cable management and reducing the need ...