On Fri, 9 Nov 2012, Tony Duell wrote:
    I beleive that while the AUI connector has a 12V power
supply for the
 external transceiver, the AAUI has a 5V supply. So converting a
 transceiver from one to the other is more than just a connactor swap. 
 I recall the same thing. 
 
 And o yet again Apple did not adhere to an accepted standard.... 
 
Many transceivers would work no matter what voltage was present,
especially the later types with external (wall-wart) power supplies. I
doubt most of the vampire-tap type 10Base-5 transceivers would work at 5V,
but many of the 10Base-T types would work just fine. Somewhere around here
I still have an AAUI to AUI cable.