New s870 came with a two wire power supply, why no three wire

I just purchased a new Toshiba S870 laptop custom made with Windows 7 from Shanghai China. The laptop works flawlessly, but emits a lot of EM F radiation. It came with a two wire power supply and not like the three wire power supply that my wife's a Asus laptop came with. I am wondering if this has anything to do with the strong EMF radiation that I am recording on my tri-Field meter?
Has anyone had any experience with this type of situation?
I would greatly appreciate any knowledgeable persons response to this query.

It is time get a new one. Here's my guide* to dealing with such issues:
http://www.macmaps.com/frayguide.html
* Links to my pages may give me compensation.

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