1. How much current does the BaseBoard draw? The current draw on the BaseBoard is determined by the speed and complexity of the FPGA design loaded into the Spartan-3E. Since the BaseBoard draws power from the USB connector it can draw up to 500 milliamperes if the board is connected directly to a computer and up to 100 ma if connected through an unpowered hub. The board draws about 40 ma after reset and all of the designs we've tried drew less than 100 ma.