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Why are there so many pins on a SATA power connector?

Fresh7 days ago
Mar 15, 202644663 views
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Problem

I was just looking at the power connector for a SATA optical drive and noticed that it had fifteen pins! I then marveled at the data connector next to it, which has a measly seven pins. I know that there are only physically three pins needed for the power connection: +12v DC +5v DC Ground Why did t…

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Fix for: Why are there so many pins on a SATA power connector?

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Here's the SATA data & power pinouts. Remember, SATA is a serial bus. This means data transfer only needs two paths -- TX (transmit) and RX (receive). In the case of SATA, there are actually two pins for each (a TX+ and TX-, and a RX+ and RX-); this…

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