Le boitier mycloudEX2Ultra neuf, ne lis pas les deux disques 4TO WD Black.
Deux voyants rouge fixe en façade.
Dans quel format les formater ?
See the dedicated subforums where there is discussion on the EX2 Ultra. This subforum (My Cloud) generally discusses a different device, the single bay/single drive My Cloud.
OS3 My Cloud EX2 Series
https://community.wd.com/c/network-attached-storage/wd-my-cloud-ex2/109
OS5 My Cloud EX Series
https://community.wd.com/c/os5/my-cloud-ex-series/255