Re: Apple ][ network ?
(actually it was an ITT 2020).
AIR Apples had no intrinsic networking, and I don't recall an interface card to do it either, although it did have 6 expansion slots.
For some reason the standard one for the disk controller was 6. I can still remember the command "PR#6" to initialise the peripheral on slot 6. I realised I was the schools (actually the boroughs) tech expert when reading the manual revealed that "PR" was to initialise for output (PRint - geddit ?) and "IN" was to initialise for "INput" (possibly a light pen) and that for the disk controller (being both, either would work).