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RK Education L293D board

Hi All

I am a beginner to robotics and have purchased a arduino uno and a RK Education L293D Motor Drive board. (http://www.rkeducation.co.uk/documents/instructions/L293DpcbComponentListandInstructions.pdf). I am curious to know if i am driving two motors with this board do i need to have just the enable pins connected to the arduino or all 6 pins (4 input pins and 2 enable pins)?