Pref. with rounded edges (i.e. not the original amiga 500 mouse).
Full function is required. mouse-adapters for ps2 are also ok (I might also have a serial pc mouse somewhere that might work if the adapter is for that, but then I got to check before purchasing)
Full function is required. mouse-adapters for ps2 are also ok (I might also have a serial pc mouse somewhere that might work if the adapter is for that, but then I got to check before purchasing)