This is the brains of your Speeduino. Every shield type Speeduino needs one, including the 0.3.x, 0.4.x, NO2C, and UA4C. Every MEGA I sell now has the DC power jack removed. The jack is not used in the Speeduino environment, and it gets in the way a little on the NO2C and a lot on the UA4C. Aftermarket, brand varies.
Why wouldn’t I want the USB cable, it’s free???
Well it is not very long/useful and it adds an extra ounce to the package, which can increase the cost of shipping. With international shipments it could add as much as $10 to the cost, if it tips the shipment into the next weight category.
Use SpeedyLoader to load your Arduino MEGA with Speeduino goodness.