I found a pinout for the adapter. Apparently there are two different adapters, a 355A and 355AF. One is for the smdr port and the other is for the admin/console port. The difference is one is DTE, the other is DCE. I hope I got those terms right, but you know what I mean. I haven't done much with serial ports since my 1200 baud modem in the early 90's!! After that everything was internal on the old ISA bus.