[bobetter]

If you use a USB plug in GPS on a Mac running both OSX and, say, Windows in Parallels, does the GPS service both, or do you have to, somehow, route the info?

If any of your nav apps that are using the USB GPS are capable of providing a TCP/IP server, you can share it between the 2 "machines" via TCP/IP.

And how many USB ports might be needed at a nav station with SSB email, printer (for the WXFax), GPS, etc.? Or do you simply use one at a time? I can only assume that two OSs would affect this number.

donal

I would think the easiest solution to this would be a USB Hub. Keyspan makes a 4 banger, I believe.