A port is a port is a port, the problem I see is a number of different types of ports aren't covered. What about SCSI, USB Firewire? It isn't unusual that ABD and the Macs Mini Din 8 serial ports aren't covered, but these are on the way out anyway. As for the others, if you have it they will work, a RJ 45 is just a type of plug. A lot of good surge protectors have these built in anyway.
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James Wall
rtb.ink@mindspring.com