Reply to post: Re: it's part of the the SATA specification.

Disk drives suck less than they did a couple of years ago. Which is nice

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Re: it's part of the the SATA specification.

Active low logic would mean that the unconnected pin floats and the drive remains powered. That doesn't explain it, unless their back planes tied pin 3 to ground which wouldn't make sense as many, many vendors actually physically tied pin 3 to its neighbours (1 & 2) that were ALSO 3.3V in the spec, but were supposed to mate after pin 3 did.

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