What driver did you try and run? I remember with the 6.4tb the one I got was a NIB 2017 era Lenovo branded SX350 model. I seem to recall it wouldn’t work with one of the available drivers I tried unlike the 3.2s. I had to use one prior generation to get it operational before the latest firmware could be added or something along those lines. I don’t remember if I used the Lenovo driver or WD’s. Its obviously been over a year since I did this so I don’t really remember all that well as I haven’t had to touch it since.