I'm using some Intel AXX6DRV3GR and AXX4DRV3GR backplanes. Before I buy new HDDs I need to know whether power pin 3 of the AXX6DRV3GR's HDD connectors are connected or not connected. And if they are connected, are they connected to 0 V or to 3.3 V?
I'm asking this because some new HDDs will not power up if P3 is not connected to 0 V.
Power Disable Pin (Pin3) is a new feature in the SATA 3.3 industry standard specification (published in February 2016). And on SAS 3.0, P3 is used to redefine as a POWER DISABLE signal.
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Those backplanes do not provide that kind of support associated with Power Disable Pin.