Here is an Apple Mac Mini which was originally released in October 2012, I have tested it successfully after erasing the hard drive and performing a clean install of Mac OS 10.15 Catalina. I was able to connect to the internet through the ethernet port and through WiFi. I upgraded the RAM to 8GB (The maximum is 16GB).Buyer will receive the exact Mac mini pictured here, or one identical to it, with a power cord. It boots up to a generic user account, and I will include the password. You may add your own Apple account to the installation.
I do include a 30 day warranty and free ground shipping to any U.S. zip code. I welcome questions from interested buyers.