They are small computers.
Single board computer to be precise.
100% Linux compatible 
There is even a keyboard integrated version. All you need is mouse and monitor to have a working Linux machine.
I use them (simple keyboard-less version) as printserver, network wide ad-trap (pihole), connected non-smart speakers, WordPress server and OpenMediaVault (NAS).
)
You really mean like removing any file related to 3.10/3.9 I can find? No backups?
And the other program I wanted to have a port forwarded for and what made me open this thread in the first place, is also, for the first time, working



