Just for clarification, I was elaborating on the description of my problematic "noisy" setup, in general, for information's sake, in light of your question.
. . . now to answer Comrade B!
It was grounded to the metal framework of the wheeled desk, which was grounded to the "clean ground line" of the 15 amp Power Circuit in the, overhead, umbilical carrying power IN, Mac Serial IN & OUT, 10bt OUT, 3 POTs lines IN, one of which connected to the Desk mounted DSL Modem which was directly connected to the 10bT Router.
Sorry, you can't see the FaradayFence, the 21" Monitor's Shade blocks it from view, but the umbilical is the gray ShopVac hose hanging straight down from the Utilities/Lighting Track above. If I have time I'll look for a better/more recent/different angle pic that shows it.
. . . now to answer Comrade B!
It was grounded to the metal framework of the wheeled desk, which was grounded to the "clean ground line" of the 15 amp Power Circuit in the, overhead, umbilical carrying power IN, Mac Serial IN & OUT, 10bt OUT, 3 POTs lines IN, one of which connected to the Desk mounted DSL Modem which was directly connected to the 10bT Router.
Sorry, you can't see the FaradayFence, the 21" Monitor's Shade blocks it from view, but the umbilical is the gray ShopVac hose hanging straight down from the Utilities/Lighting Track above. If I have time I'll look for a better/more recent/different angle pic that shows it.