The Phillips portable DVD player has -- for some unknown reason -- an old-fashioned plug (equal-sized prongs). It is plugged into a UL-approved "temporary power tap" that has the uneven-sized receptacles, with one slot larger than the other. The strip has three prongs and the wall has a three-prong receptacle.
Is it dangerous to plug the old-fashioned prongs into the modern receptacle with the uneven slots? There are no other pieces of equipment involved, just the DVD player.
I wouldnt worry its design just doesnt need a polarised plug or ground.
All that plug indicates is that the device is very old (not applicable to a DVD anything) or it is "double insulated" which would be the case here. There is no difference between which way it gets plugged in. There is also no real "power" switch so that polarity is not an issue either.
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