Apple Attachment Unit Interface
Apple Attachment Unit Interface (AAUI) is a mechanical re-design by Apple of the standard Attachment Unit Interface (AUI) used to connect computer equipment to Ethernet. The AUI was popular in the era before the dominance of 10BASE-T networking that started in the early 1990s; the AAUI was an attempt to make the connector much smaller and more user friendly, though the proprietary nature of the interface was also criticized.
AAUI transceiver for 10BASE2 with cable
AAUI transceiver for 10BASE-T
Two AAUI 10BASE2/10BASE-T combo transceivers (Linksys MACT2T and LL8-LEENET-C) and an AAUI dual 10BASE-T transceiver that is actually a three-port hub (Farallon)
10BASE2 is a variant of Ethernet that uses thin coaxial cable terminated with BNC connectors to build a local area network.
10BASE2 cable showing the BNC connector end.
10BASE2 cable with a BNC T-connector.
EAD outlet
Different types of T-connectors, with AAUIs (an AUI variant specific to Apple computers)