UPDATE....
Switched to a PCI adapter and cable setup since the slotted drive adapters x 2 failed. So,,,,,,,
Started with the card + 100CM cable and nada.
Switched to a 50CM cable and got signs of life through the system renumbering the NIC IF's on boot which is normal to see when it picks up +/- a PCI device.
Go look for the new disk.... NADA! WTF!?!? double checked all the cabling and rebooted again and NADA.
Decided to move the card down to another slot which happens to still be G4 instead of the G5 top slot both of the other cards were in w/ Micron's and moved my NIC to that slot and watched for lights on power on and they started dancing like they should so, the slot isn't dead and works fine other than anything associated with these drives. Go figure.
Boot to the desktop and open "disks" and sure as S*&^ it shows up in the list.
Changed my mount points on the M2 to backup and put the U3 on Storage by UUID as this avoids the renaming complex Linux has when booting. Reboot and verify.
Things up, mount, etc.
Code:
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
nvme2n1 259:0 0 931.5G 0 disk
└─nvme2n1p1 259:1 0 931.5G 0 part /mnt/backup
nvme1n1 259:2 0 14T 0 disk /mnt/Storage
nvme0n1 259:3 0 931.5G 0 disk
├─nvme0n1p1 259:4 0 1G 0 part /boot/efi
└─nvme0n1p2 259:5 0 930.5G 0 part /
OS - 09:00.0 Non-Volatile memory controller: Sandisk Corp WD PC SN810 / Black SN850 NVMe SSD (rev 01)
U3 - 0a:00.0 Non-Volatile memory controller: KIOXIA Corporation NVMe SSD Controller CD8 (rev 01)
M2 / backup - 0c:00.0 Non-Volatile memory controller: Phison Electronics Corporation E12 NVMe Controller (rev 01)
Now, to see how this one works AFA lasting more than a week. Monitoring temps a bit closer as well due to mentions of high temps on the Micron's someone else added to their system. Right now though it's sitting at 38C which is in line with the 2 x M2's in the system currently.
Right now it's just sitting in the case not actually mounted though and will need to figure that out once it lives longer than the return period and proves itself. So, the other thing that's going to make my OCD go haywire is the slot issue with the X16 G5 being flakey. No real reason it shouldn't be able to work with the adapter / cable / drive. The other option is to switch the drive adapter to an M2 format and push the NIC back down to the original slot. Either way both options result in the drive having G4 x4 speeds.