Case vs motherboard fan question

Hopefully a quick question regarding where to plug in case fans. Info on the case and fan are below. The case has a fan splitter for cable management, but they say it works with the CPU_fan, as the others may cause problems due to not being true pwm.

If I go into my bios and set one of my 4 sys_fan connector to pwm, can I run the case splitter off of that sys_fan connector?

Thanks for the insights!

I have the following case: https://www.newegg.com/black-phanteks-enthoo-pro-atx-full-tower/p/N82E16811854003?Item=N82E16811854003

And the following motherboard: https://www.newegg.com/msi-x570-a-pro/p/N82E16813144263?Item=N82E16813144263

submitted by /u/Anticyte
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