With FW 3.0.90 my Z9X has huge troubles finding any SATA drive. Neither at power on or Plug & Play. This turned out to be a problem using an Linear 12V precise PSU. Using the original switched mode PSU it works as that one deliverers a higher peak voltage.
strange, I have a 2.5-inch drive connected and it is available, but the fact I did not try to connect 3.5-inch disks because I will not wime or the z9x power supply will last