Arduino motor shield I'm making a soccer car with arduino. And I have this undocumented motor control shield. So I don't know how to program it. I've tried to code it as if it be an H bridge, but is not working. Someone know which are the pins that I have to use? 
The plate is from DK Electronics, and says motor control shield for arduino. 

Don't know why but the image can't be upload from my phone. 

As I can't show more this way I have published on my Twitter account the image, if you can I'll be grateful.
Link: https://twitter.com/ricardovaras_99/status/789249497322889216

This is the code I used guided by some internet articles about the Arduino's original motors control shield. 

 pinMode(8,OUTPUT);       //Channel A Brake Pin Initialize
 pinMode(9,OUTPUT);       //Channel B Brake Pin Initialize 
 pinMode(12,OUTPUT);      //Channel A Direction Pin Initialize
 pinMode(13,OUTPUT);      //Channel B Direction Pin Initialize
Judging by the fact that you agree it looks like this, a search reveals it is a knock-off of the Adafruit V1 motor shield.

Their page shows how to connect to it, and has example code and a library.

I don't really want to post a link-only answer, but the alternative would be to parrot the Adafruit page, which isn't really fair to them because this board wasn't even purchased from them.