This is late 2014 mac mini,,,, it came with 4GB ram and 500GB HDD, looks like brand new ,,i tried to connect to my samsung 4k monitor, its lagging alot , so if you going order one , do the 1080p monitor only !!!!!!, and the only thing you can upgrade by yourself is the HDD, because the ram module was solided on the motherboard ,, you can't upgrade them at all ,,,,, when i order this unit , i ordered 16gb ram too ,,,, but can't use them ,, then i try to use them on my other laptop , but dam it ,,,, one of them was dead ,,,,,, that gives me a reason to return the ram ,,,, otherwise ,,, i would like to keep them