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Incorrect. Please read this: https://www.tomshardware.com/news/hdd-sata-power-disable-feature,36146.html You will see that on the SATA power connector, pins 1-3 were originally 3.3 V connections. They have been changed so that there is no longer 3.3 V on the SATA power connector, with pins 1-2 now being designated as "reserved" and pin 3 as PWRDIS (Power Disable). There are also numerous reports of SATA 3.3 compatible hard drives that fail to start when plugged onto older power supplies that provide 3.3 V on pin 3. Take a look at the user reviews on amazon.com and newegg.com for example.

I am looking at getting a new WD HUH721010ALE604 hard drive: https://www.ascent.co.nz/productspecification.aspx?itemID=452157 Apparently this conforms to the new SATA standard where pin 3 of the SATA power connector is a Power Disable signal. So I need to know if the SATA power connectors on my RM650i support this new SATA standard (SATA revision 3.3), or if they put +3.3 V on pin 3 as previous SATA connectors did. If they put +3.3 V on pin 3, they will not be compatible with my new drive and it will not power up. What revision of SATA standard do the RM650i power connectors support?