A 2-pin terminal for separate motor power . Remove the PWR Jumper when using a separate supply to avoid damaging the Arduino . Usage Tips L293D Motor Driver Shield with Arduino - Hackster.io
Up to 4 bi-directional DC motors with individual 8-bit speed selection. Stepper Motors: hw 130 motor control shield for arduino datasheet
HW-130 Motor Control Shield is a high-power driver board for Arduino, based on the L293D dual H-bridge A 2-pin terminal for separate motor power