As you might understand, I'd like to replace my desktop, a 2006 Pentium 4 with a 3-GHz processor. It has always run Debian, and so will the new one.
My concern is about support for three ancient peripherals that I like better than the modern equivalents: 1. A Northgate Omnikey 101 keyboard (from 2006) with a 5-pin DIN cable, currently going via an adapter to a PS/2 port in the desktop; 2. A Logitech M-MD15L three-button roller-ball serial mouse (from 2006); and 3. An HP LaserJet 5MP printer from 1995 with a parallel-port connector. Are desktops still available with PS/2, serial, or parallel ports? If not, can these all be adapted to USB? Are USB-A ports still common, or is USB-C taking over? My question is of course not just about hardware but about software support for these devices in Debian. They all work now in Buster (oldstable). Thanks.