Ok, here's my situation. My home is serviced with two electrical panels. One for the older section (old fuse type) and one for an addition that was built in 1969. The master breaker for the whole house is on the new panel. My computer and router are in the old. My 722K in the newer. My guess is, and what I'm hoping for confirmation of, is that a Slinglink would not work because of the independent boxes. The only commonality is the main feed. Running an outlet from old to new would be impossible. Maybe some of you are electrical gurus. Opinions???