No, that's not what Mac said. Here is what he said:

"If you use the Grounded Surge strip and plug everything else into it along with the computer through the two prong adaptor, there will still be a path to AC Ground for the computer, it will just be going through the other stuff that's hooked up, one path instead of two.

This is legal in the US electrical code, that's why the adaptors are still UL listed, among other things."

The USB cable has nothing to do with this. Without rereading this whole thread, I believe you brought that up merely as one possibility for solving this. It's now been shown it's not necessary to worry about the USB cable, the other stuff plugged into the power strip is covering the AC ground.

Bob

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