SATA Power connector identification

[pk500e]

I have a SATA 2 disk drive which I need to connect to the motherboard, and can't identify which SATA power cable I need. The motherboard connector has 4 pins 1.5cm wide, and has a plastic bend-back catch on the front. It is smaller than the IDE MOLEX style with two corners shaved off. There is also a smaller connector on there called RS232?

 

[EsaT]

SATA drive is powered from cables of PSU.
Not from motherboard.
And if its some proprietary system, then user manual should tell about it.

RS232 is ancient serial port.

 

[Tanin'iver]

I assume you mean that strange white connector to the left of the SATA1 data socket, below the three capacitors. I've never seen a connector like that before, so as EsaT said it could be some strange proprietary thing. Do you know the make/model of that motherboard?

I tried putting that "E110808ZHB" that I see printed in the middle into Google but no hits.