SW3 Switched ON The MiSTer project has released a new optional expansion, being the Digital I/O Board version 1.2. A key feature of the new Digital IO addon over the Classic IO board is the freeing up of the secondary 40 pin GPIO header, leaving it available for possible future expansion such as allowing for dual SDRAM modules. Installing this add-on board is straight forward but it does require a simple switch position change on the DE10-Nano mainboard before the Digital IO Board will operate correctly. First locate the switch marked SW3 on the DE10-Nano mainboard, as seen in the images above and below on this page, then just flip the SW3 switch into the ‘On’ position, that is all you need to do. Your DE10-Nano is now correctly configured to support the Digital IO Board. The next step is to plug the Digital IO Board into the four Arduino headers on the DE10-Nano. Just line up the the Digital I/O Board with DE10-Nano and then carefully line up the pins with the Arduino headers and gently push into place, make sure the pins on both sides are correctly aligned and are actually being inserted into the Arduino headers. See the below images to assist with location and connection to the Arduino headers. Double check that all the pins are correctly lined up and inserted into the Arduino headers, then just push the IO board firmly down into place. The Digital IO Board is now installed and ready for action! Buy the new MiSTer FPGA Digital IO Board visit the store page!