Asante makes an adapter that will plug into the Printer Port of your retromac and convert to Ethernet, called AsanteTalk, but it is more suited for connecting Macs for file and printer sharing. I don't know how reliable it is with using it as a means to get the SE/30 on the Internet. For all I can say, you may need to add in playing with Open Transport, MacTCP and AppleTalk protocols and control panels/extensions. It can be real frustrating to set it up. Oh, and you have to resort to 10-BaseT (10Mbps) ethernet speed and turning off auto-negotiation on your ethernet hub/router equipment.

http://www.asante.com/products/CardsAdapters/AsanteTalk.asp

I hope this helps.

73s de Phreakout. :rambo: