FWIW, you can find InsideOut Edgeport interfaces on eBay that are usually quite reasonable.
I have them in 2 port, 4 port and 8 port configurations. The use a single USB connector and provide what the computer sees as stable serial ports that stay where you put them. Each port can be configured, port number renamed, etc via the Control panel - System... The USB ports have a tendency to wander around if you use them in real world situations. With all the problems associated by a difference in ground potential, mechanical switchboxes increase the chances for ground loop. I am coming into this thread late, so apologies if this has already been covered. David KD4NUE ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

