Topic: Babyface Pro FS bus power issue

Hi everyone

I’m new here and received my first RME product today. Unfortunately I have an issue and was wondering if someone here would be kind enough to help.

Today I received my Babyface Pro FS but it won’t run on bus power alone. Can anyone tell me why?

I’ve tested it using a power cable and it works fine like that. I’m not using a hub either. It’s plugged straight into the computer with nothing else plugged it.

I have an iMac (Retina 4K, 21.5-inch, Late 2015)
Processor: 3.1 GHz Quad-Core Intel Core i5
Memory: 16 GB 1867 MHz DDR3

Please help if you can.

Thanks.