24 pin powersupply Mobo with 20 pin powersupply help

Hi I made a mistake when I ordered some parts from newegg
I bought this mobo:
BIOSTAR TForce6100-939 Socket 939 NVIDIA GeForce 6100 Micro ATX AMD Motherboard - Retail

And I bought a wrong 20pin power supply when that mobo needs a 24pin for the mobo.
this is the powersupply I bought:
Rosewill RV350 ATX 350W Power Supply 90-135 vrms or 180-265 vrms switch-selectable CSA, CB, TUV, FCC, UL - Retail

I see they sell a adpater on newegg to convert the 20pin to 24pin for the powersupply
I am wondering if someone knows or if their a wiring schematic so I could make my own.
I cannt get this adapter localy, and would love to get this working, if I order another powersupply with 24pin or if i ordered the adpater I am looking at next wednesday.
any help or ideas
Thanks

 

Greetings and welcome to Majorgeeks.

Most (not all) 24 pin mobo power connectors have a notch on them, that allows ye to pry away from the rest of the 20 pin connector.