The Millennium Chess Computer - Adapter is configured to utilize three different electrical power grid systems, depending upon the power grid in the country of use. The adapter for the standard US power grid wall outlet does it's job and provides power to the Millennium Chess Computer - ChessGenius family of chess computers.
Mine is plugged into a surge protector on a 6-foot extension cord from the wall socket to my desk, that also has an old ballast florescent desk light plugged into the same surge protector. When the ChessGenius Pro is OFF, and I turn ON the desk lamp, the ChessGenius also turns ON. This is the only glitch which I have observed with the adapter. The ChessGenius does not turn off, freeze a game, etc. This happenstance of turning ON does not occur when using battery power. It does not occur when the adapter is plugged directly into the wall socket. It does not occur when other desktop electrical devices plugged into the surge protector are powered ON or OFF.
So, my ChessGenius Pro -Chess Computer turns itself on when I turn on my old desk lamp --- and my dogs get excited wanting to walk when I go to the door. It is nice to be wanted!