I’ve got one running in a Proxmox cluster. Getting it setup was a bit particular (due to the T2 chip if I remember correctly), but it’s be working flawlessly. I use the quick sync feature of the iGPU for my jellyfin container.
If you were going to buy something new, I think there are more cost effective boxes of about the same size and spec, but if you’ve got it already, you should definitely start playing with it.