Please note there are NUMEROUS past discussion on this issue. WD generally will not give one an answer when this question is asked (over and over). See the many past discussions (use the search feature - magnifying glass icon upper right) on how to use either SSH to shut down the single bay second gen My Cloud devices or you can use the WD Quick Access to shut down the gen 2 single bay My Cloud. Feel free to join the rest in voicing your opinions in the long running Cloud Ideas thread requesting a Shutdown option in the My Cloud gen 2 Dashboard.
https://community.wd.com/t/shutdown-button-on-wd-my-cloud/97124
https://community.wd.com/t/bring-back-the-shutdown-button-to-the-my-cloud-dashboard/177758
WD Quick View Download:
Windows: https://support.wdc.com/downloads.aspx?p=188
