Which server for Ubuntu Server 22.04?

Hey everyone!

I m new to this “game” and i have some doubts.

One of them is which server to buy to build my home lab based on Ubuntu server.

Bc of space and noise i d need a desktop tower, found some old Fujitsu tx1310 m3 on Ebay here in Europe but Ubuntu dont certify the machine for Ubuntu Server 22.04.

Do you perhaps have any suggestions?

My lab will need to run Snort, pfSense and ELK plus 5 boxes to test security stuff.

Many thanks!