Uses 4 mounting screws. Uses 4 mounting screws. Can be used in a regular ATX case, but often not the other way around. Use the data above to determine if a particular power supply would fit your case. They often use power supplies that are re-labeled as their brands.
Power supplies are also heavily cross-branded.
It s possible that some power supply manufacturers produce two grades of the power supply for different market segments. Other factors may also contributed to the weight differences, for instance, the number of power connectors and fans may vary from one to the other. However, such factors typically are in agreement with the trend. The heavier the better. I have a case with a Deer power unit and am not too thrilled about any part of it.