I have Wd My Clud 4T fully working attached to the network.
I configured a powered USB 2.0 hub with 7 slot ports that I connected to the USB port of my white WD My Cloud; I attached 3 Hard Disks to this hub.
When I connect the hub My Cloud starts analysing it, it recognized 3 Hard Disks on 4 and after some minutes it does not reply anymore to web interface (disconnected? crashed?).
Hi maxthebest, have you verified if the problem happens if you connect the USB Hub and then each hard drive individually? This way you can be sure that the problem is not caused by one of the connected hard drives.