DB9 to RJ45 Adaptor

I just purchased a DB9 to RJ45 Adaptor today at Fry's.

It has 8-colored wires and 9 holes female adaptor ( 4 holes on first row, and 5 holes on second row). 8 colored wires and 9 holes, I huess one hole has to be left alone.

The 8 colored wires are brown, black, blue, yellow, white, green, orange, and red.

Anyone know how to get the right colors into the right holes?

 

 

 

 

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