Sata hard drive sata powerconnector does not work.

I have found this picture, the 3. picture.
What are the 4 pins to the left for (not the data or power connector)?

The seagate hd all the time makes trouble with the power connector. Most it does not work.
But it's generel that when hard drives are connected and disconnected often,
then the sata power connector will not work.
If I want to sold the 4 molex cables to the hard drive's sata power pins, which pins
should I use?

Thanks.
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More about sata hard drive sata powerconnector work
  1. Some drives have both Molex and SATA power connectors. You can use either.
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