This is the Black Edition Pololu A4988 driver, with improved thermal dissipation. It is capable of up to 2 A per winding (with adequate cooling), and about 1.2 A without additional cooling. Power supply voltage: 8 to 35 V.
Please see the Pololu product page for more details, including schematics, adjustment instructions and warnings.
For optimum heat dissipation, you can assemble it with our long headers and stick a small heatsink on the underside of the board!