Hi! I've just aquired a CDC 6-port serial card for my Personal Iris 4D/30. The model number might be CD23/3608, the ROM is labeled `CD83/3608-FW01 240757 V1.007 COPYRIGHT 1990 CENTRAL DATA CORP'. Anyone have a lead on the switch & jumper settings, or IRIX drivers? It looks like the ports can be set to either RS232A, RS232B or RS422. (I should look up the differences between A & B. I just donated a TI expansion chassis to Merle with a RS232B card in it) It also appears that the RAM can be upgraded from 16K to 64K, and it will take an EPROM of 64K (installed), 128K, 256K, or 512K. It should be a lot of fun to play with, I hope I can get it running. Built pretty good too, only turned-pin sockets. Bob