SATA Drives not Detected in BIOS of ZimaBlade (they work with external PSU)

I have tried my Samgsung SSDs, model 850 PRO and 750 EVO in my ZimaBlade. These models absorb just a few Watt (as per their pdf specs).

None of the two is seen in the BIOS. The drives are seen in BIOS if I attach them to an external power supply and to the ZimaBlade.

So I am wondering why the ZimaBlade is not powering them up. Same problem if I attach one drive at a time.

I read people have issues with SATA connectors. Do I need to somehow turn on the power from BIOS somewhere?

These drives are very low power, they should work without a problem!

The solution seems to be a rather dumb one. Attach the power cable.

Unfortunately the power outlet on the back of the ZimaBalde is not labeled and I missed that it.

These instructions where helpful. Especially this picture How to set up a NAS with ZimaBlade | Zimaspace Docs