Hi @nikt, and welcome!
- Please see How to provide good information and, if applicable, [HowTo] post screenshots and links
- Please provide the output for
lsblk
before as well as after plugging in the device(s):
lsblk
- Also please provide the output for:
fdisk -l
with the drives plugged in.
While I might not be able to help, the above requested information would assist anyone trying to help.