It has 2 connections for 5v hobby servos connected to the Arduino?s high-resolution dedicated timer. Its 4 h-bridges and l293d chipset provide 0. 6a per bridge. It comes with thermal shutdown protection and internal kickback protection diodes. It can run motors on 4. 5vdc to 25vdc. It provides up to 4 bi-directional dc motors with individual 8-bit speed selection with single coil, double coil or interleaved stepping. The pull-down resistors keep motors disabled during power-up. It has big terminal block connectors to easily hook up wires and power arduino reset button brought up top 2-pin terminal block and jumper to connect external power, for separate logic/motor supplies. This is tested and compatible with Arduino mega 1280 and 2560, diecimila, duemilanove, and Uno.