@karen
Don't blow up something. Molex is able to deliver much more power than SATA power cable.
@karen
Wikipedia says this so I don't know: "Passive adapters are available that convert a four-pin Molex connector to a SATA power connector, providing the 5 V and 12 V lines available on the Molex connector, but not 3.3 V. There are also four-pin Molex-to-SATA power adapters that include electronics to additionally provide the 3.3 V power supply.[46] However, most drives do not require the 3.3 V power line."