@morrick your point on luxury is spot on. They could have said "you get a power adapter free, but you can choose not to take it". Then folks would feel conscientious if they didn't want/need an extra adapter, or a good feeling in getting one free.
@morrick >> and some kind of application that may give me the equivalent of a 'Control panel', so that I can manage external devices, network connections, and so forth.
Apologies for my patent ignorance, but I'm kind of flying blind with this.
@morrick When I log in using the previous owner's credentials, the computer autoloads dwm as desktop environment. I'm in a GUI, but so far I only managed to open a Terminal window. I'm trying to see whether there's a graphical file manager… >>