AUI (Attachment Unit Interface)
AUI is a 15-pin connector that is used to attach coaxial, fiber optic, or twisted pair cables that are found on Ethernet cards.
In a network the AUI is the physical interface between a network card and Ethernet cable.
AUI using a D-shape connector is an interface from a computer to an Ethernet. The AUI Interface that plugs into an AUI cable, which can be up to 50m long is fitted to the computer or the client in a 10Base5 Ethernet installation.
In 10Base-5 Ethernet networks, a short cable is used to connect the AUI with a transceiver on the main cable. In 10Base-2 Ethernet, the NIC connects directly to the Ethernet coaxial cable.
