LocalTalk

LocalTalk specifies a system of shielded twisted pair cabling,[2] plugged into self-terminating transceivers, running at a rate of 230.4 kbit/s.

Networking was envisioned in the Macintosh during planning, so the Mac was given expensive RS-422 capable serial ports, first on a nine-pin D-connector, then on a mini-DIN-8 connector.

This clock frequency, 3.6864 MHz, was chosen (in part) to support the common asynchronous baud rates up to 38.4 kbit/s using the SCC's internal baud-rate generator.

Originally released as "AppleTalk Personal Network", LocalTalk used shielded twisted-pair cable with three-pin mini-DIN connectors.

PhoneNET was also able to use an office's existing phone wire, allowing for entire floors of computers to be easily networked.

Farallon introduced a 12-port hub, which made constructing star topology networks of up to 48 devices as easy as adding jacks at the workstations and some jumpers in the phone closet.