I still use a Mac Mini from 2009 as my main computer although I have upgraded the hard drive to a solid state disk and expanded the memory from 2 GB to (maximum

I still use a Mac Mini from 2009 as my main computer although I have upgraded the hard drive to a solid state disk and expanded the memory from 2 GB to (maximum) 8 GB. I run Debian on it with the window manager Blackbox. Other World Computing has great upgrade instruction videos for all models.