Question Without a CPU and RAM installed in a motherboard, is it possible to test RGB fans connected to a 'Commander Pro'?

Apr 8, 2019
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Hi, I'm building a PC and have bought a case that comes with RGB fans that are connected to a Commander Pro and fan hub. I would like to test that the fans and LEDs work.

Without a motherboard that has a CPU and RAM installed, would it be possible to connect the Commander Pro and fan hub into the power supply to test the fans and LEDs? Thank you!