Need help finding specs on this FAN

I have this FOXCONN 92mm. Model PV902512P.

It's a 12V DC rated at 0.37A 92mmx25mm fan.

It has a 4 mini pin out (can plug into a 3 pins connector) -blk, yellow, green, blue. of which when I plug into a 3 pin connect, only the blk, yellow, green are connected.

Can anyone help me find specs on how many CFM this fan push and what's that blue wire does? - I don't think it's rpm monitoring since I was able to monitor the RPM through my IC7-G when used the other 3 pins.

thanks a lot

Foxconn does not list this fan, I suspect it is a rebadged fan and not made by them.
http://www.foxconn.com/

There also is no fan listed anywhere on the net regarding that Foxconn model number. The only way you can find out is by calling Foxconn