Well, I have one marked as:
3Com EtherlinkIII 562D/563D
Looked in that readme and thats why I bought it.
Couldn't make it working till now :-(
Author of the 3c589.device answered me on that forum and said that he discovered some difficulties with that card.
Have a look:
http://www.amiga.org/forums/showthread.php?t=6592Good luck