Well, based on construction alone it ought to work. But that does not rule out fatal design flaws of course.
All are fake except the top left.
You don't need to break or cut the plastic cover. Insert a flat screwdriver between the metal back cover and turn it. The plastic cover will be opened without breaking. Then we can understand that it is original, it is difficult to understand without seeing the inside.I have just received a couple of STK442-130 modules from an eBay seller located in the US. The chips have a 4D71 code on them. This code is the same I see on pictures from eBay sellers located in China, which makes me wonder if these chips are fake.
Any advise from the experts?