2 5V servo motor (servo) ports Connected to for 's high-resolution, high- timer - no jitter Up to 4 bi-directional DC motors and 4 PWM speed control (approx. 0.5% resolution)Up to 2 stepper motors forward/reverse control, single/dual step control, interleaved or -step and angle control.4-way H-bridge: L293D chip provides .0.6A (1.2A ) current per bridge and with thermal cutoff protection, 4.5V to 36V.Pull- resistor ensures motor stays stopped during -up. terminal block for easy wiring (10 - 22AWG) and supply.With for reset button.2 terminal external terminals separation of and motor drive .Compatible with , Diecimila, & Duemilanove.Colour:As shownMaterial:PCBPackage Contents:4 x motor boardOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.