The MiSTer project lead developer Alexey Melnikov (Sorgelig) has designed and added a number of daughter boards, these provide additional functionality to the required base DE10-Nano board. A basic entry level MiSTer setup starts with just a bare DE10-Nano board. However with just one additional addon board SDRAM, you will be able to use the majority of available computer, console and arcade cores.
The most popular expansion addon boards are as follows, the MiSTer SDRAM board which is plugged into the JP1 (GPIO 0) connector of the DE10-Nano board. Providing a retro memory module for many cores.
The MiSTer I/O board is plugged into the JP7 (GPIO 1) connector of the DE10-Nano and provides a VGA output, 3.5mm audio jack with TOSLink, three buttons, three status LEDs, secondary micro SD card slot, fan header, USB expansion connector, two additional headers allowing integration of the MiSTer into cases.
The Real Time Clock or MiSTer RTC board provides real time offline for certain MiSTer cores, the RTC board for the MiSTer is plugged into the Terasic DE10-Nano’s LTC connector.
The MiSTer USB Hub Board is an expansion board allowing for convenient USB device connections, this add-on board provides a 7 port USB hub which sits neatly under the DE10-Nano main board.