The A20-SOM204-1G from Olimex is an open source embedded system development kit based on the Allwinner A20 dual-core Cortex-A7 processor. It has a memory capacity of 1GB of DDR3 memory, as well as 4GB of NAND flash memory and an SD card slot for storage. It also includes an onboard Ethernet port, Wi-Fi and Bluetooth connectivity, 2X USB ports, RS-485, audio and video interfaces, 46 general-purpose I/O pins, battery charger circuit, and a 3.5mm audio jack. The A20-SOM204-1G is powered by Linux and Android operating systems, and it has been optimized for applications such as embedded computers, multimedia players, IoT systems and controllers.