They have good, basic design. They last forever and are easy to repair. They have everything you need, no extras, but nothing lacking.
They’re like the Platonic Ideal of laptops; you open it up and you don’t say “wow”, you say “Well, this sure is a laptop” – but that’s not an insult; that’s what makes them the perfect all purpose general laptop.
Curious to hear everyone’s thoughts and opinions :)
Newer optiplexes are the same.
Even the small ones can easily be opened, remove the fans, RAM, SSD, all without a tool.
The only problem they have (including the model you shown) is that they use a proprietary 5-pin fan connector.