expanding board A 5V servo motor (servo) port is connected to the 's high-resolution and high-precision without jitterUp to 2 bidirectional DC motors and 4 PWM speed regulation (about 0.5% resolution)1 stepper motor forward and reverse control, single/double step control, staggered or micro-step and rotation angle control2-way H-bridge: The L293D chip provides 0.6A ( 1.2A) per bridge, current and thermal power-off protection, 4.5V to 36V.Large terminal terminal blocks make wiring easier (10-2AWG) and power A 5V servo motor (servo) port is connected to the 's high-resolution and high-precision without jitter Up to 2 bidirectional DC motors and 4 PWM speed regulation (about 0.5% resolution) 1 stepper motor forward and reverse control, single/double step control, staggered or micro-step and rotation angle control 2-way H-bridge: The L293D chip provides 0.6A ( 1.2A) per bridge, current and thermal power-off protection, 4.5V to 36V. Large terminal terminal blocks make wiring easier (10-2AWG) and power Model: L293D Motor Drive Expansion Board Product size: 35x39mm Colour:blue Material:PCB+Metal Package Contents: 5 x L293D motor drive expansion board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.