Lattice Semiconductor must be strong believers in the phrase "less is more", as by providing this minimalist iCE40HX8K Breakout Board they expect one to work one's butt off to get the most out of it. However, they could only be described as true democrats, because not only is the board minimalist so is its sparse user guide, as well the challenging documentation on using the development software, iCEcube 2.
This means that if you love the excellent iCE40 family of FPGAs, like we do, you need to be prepared to bring your "A" game to the digital design fiesta, like we had to, when figuring out how to use this particular FPGA development board.
Everything should be made as simple as possible, but not simpler - Albert Einstein.