Editing Attachment Unit Interface (section)

== Connector and signals ==
An AUI connector is a '''DA-15''' ([[D-subminiature]]) type, where the DTE side has a female connector and the MAU side has a male connector.<ref name="spec"></ref>

The connector often uses a sliding clip instead of the typical thumbscrews found on D-connectors, allowing the DTE and MAU to be directly attached, even when their size or shape would not accommodate thumbscrews. However, the clip mechanism is sometimes considered awkward or unreliable.<ref>{{Cite web |url=https://www.mattmillman.com/projects/10base5/#comment-35680 |title=Archived copy |access-date=2024-10-02 |archive-date=2024-08-29 |archive-url=https://web.archive.org/web/20240829114711/https://www.mattmillman.com/projects/10base5/#comment-35680 |url-status=live }}</ref>

In the case of incompatible fittings, the jackposts or sliding clip can be unscrewed and replaced, or adapter dongles and cables can be used.

Electrically, the AUI's differential signals are designed for use with a 78 Ω cable and can transmit data between DTE and MAU at 10 Mbps over the standard's specified 50-meter length.<ref name="spec"></ref>

AUI drivers and receivers are required to tolerate wiring faults without permanent impairment of the pair. Signal jitter is controlled to within ''1.5 nanoseconds'' across the interface.<ref name="spec"></ref>