Pins 1, 2, and 3 are optional as well, as evidenced by some adapter cables that connect the drives to older PSUs. These are usually Y-adapters that have the four-pin drive connector on the other end. Currently, SATA drives rarely use 3.3 volts. That may be because there are too many people using adapters so the drive makers don't want the headaches which come with using 3.3 volts. But in the future, 3.3 volt drives may become common so you need to be careful when using SATA power cables which don't implement 3.3 volts.
Det står altså på sida du lenka til.
Så langt har eg ikkje treft på SSDer eller harddisker som nekter å fungere uten 3.3V.