Yeah, the one in the lower picture has both BNC and RJ45.
All 3c589s I've seen so far have been configured to automatic media select, but you'll need an old laptop + the etherdisk from 3com if this is not the case..
The etherdisks are not too difficult to find:
ftp://ftp.3com.com/pub/NIC/3c589/
3c589_2.exe is what you're looking for. The config utility works in DOS for a card this ancient. (really, you need a dos boot disk or cdrom, a windows cmd prompt won't do)