Issue inserting Seagate HD in My Book Duo

Hi, I bought from someone a My Book Duo raid case, in order to use it with 2x Seagate 4TB hard drives that I have at home, but they are not recognised… Someone knows if My Book Duo works only with WD hard drives?
Thanks for your help

Hi @b0ris,

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting: