Whats different between Silicon Explorer I and Silicon Explorer II?
The first version of Silicon Explorer was designed to only support 3.3 V and 5.0 V devices. Also, it takes its power from the board causing potential limitations when sampling at high frequencies. Silicon Explorer II has its own external power supply. This allows the Silicon Explorer II to operate correctly on devices which utilize 2.5 V power supplies, and eliminates the power burden on the board.