Robert, In a message dated 12/13/97 2:32:13 AM, you wrote: >Does anybody know where I can find a diagram showing the various Pins and >I/O functions for both the modem and printer serial ports? (Mac) Webster Computer Corporation has a modem port diagram that may be what you need. It is actually the configuration of their router connectors, but because their router allows either local talk connectors or modems to be connected, just as the back of a Mac, I believe this configuration will get you started. Hope this helps, GB BTW, Webster makes a router that has proven perfect for our school setting: It bridges ether and localtalk and allows ARA dial in and out. Once on the router via modem I have access to the network and WAN. Additionally it serves IP addresses for those wanting Internet access.