Erasing drive to be returned back?

How do i erase the one drive that need to be returned? i just bought another ”wd red label” to replace a bad drive and i found that wd is screwing with us by selling cheap ”red labels” drives (smr, not cmr). The drive is EFAX not EFRX as it should be.

I do not have a dock for the drive, so what do i do to erase the disk permanetly? Normally i would use fdisk or similar product to erase and write the disk by ”null” several times, but now it is a nas drive.

Is there a possibility to remove another (the working drive) and leave this cheap drive inside the nas and format/erased it to be erased permanently?