Here is an Apple Mac Mini which was originally released in October 2014 with 8GB of RAM, a 500GB hard drive and a 1.4 to 2.7 GHz Intel Core i5-4260U processor.
I have tested it successfully under Mac OS 10.15 Catalina. I then erased the hard drive and performed a clean install of Mac OS 12 Monterey. I was able to connect to the internet through the ethernet port and through WiFi. Apple included 8GB of DDR3 RAM when this was new. For the 2014 model year only, Mac minis did not have removable case bottoms or user access to the RAM.
Buyer will receive the one of the exact Mac mini pictured here, with the original white Apple power cord. It will boot up to the screen shown in the last picture so that you can customize the OS installation with your own information and / or Apple account.
I do include a 30 day warranty and free shipping to any U.S. zip code. I welcome questions from interested buyers.