juanjostorreshernndez :
No, peripheral 4-pin or(molex) connector is not the same as SATA connector.
Thanks juanjostorreshernndez. It seems that SATA power connector has one more 3 V than the 4 pin molex. One thing I am not clear is I have a PC-Q25 case with SATA backplant to support 5 SATAs, each SATA in the backplant contains both 15 pin SATA power connector and peripheral 4 bin (molex). The Seasonic G Series 360W PSU also has both peripheral 4 bin (molex) and 15 pin SATA power cables. I guess I can use the 4 pin molex instead of SATA power cable to connect to the backplan, is it correct?