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Computing (FOLDOC) dictionary
Apple Attachment Unit Interface
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hardware, networking (AAUI) A 14-position, 0.050-inch-spaced
ribbon contact connector. Early Power Macintosh and Quadras
had an AAUI (Apple Attachment Unit Interface) port
(rectangular shaped) for Ethernet, which requires a
transceiver. To use twisted pair cabling, you would need
to get a twisted pair transceiver for the computer with an
AAUI port. Some Power Macintosh computers had both an AAUI
and RJ-45 port; you can use one or the other, but not both.
The pin-out is:
Pin Signal Name Signal Description
---- -------------- ---------------------------------
1 FN Pwr Power (+12V @ 2.1W or +5V @ 1.9W)
2 DI-A Data In circuit A
3 DI-B Data In circuit B
4 VCC Voltage Common
5 CI-A Control In circuit A
6 CI-B Control In circuit B
7 +5V +5 volts (from host)
8 +5V Secondary +5 volts (from host)
9 DO-A Data Out circuit A
10 DO-B Data Out circuit B
11 VCC Secondary Voltage Common
12 NC Reserved
13 NC Reserved
14 FN Pwr Secondary +12V @ 2.1W or +5V @ 1.9W
Shell Protective Gnd Protective Ground