Banana PI BPI-M2 Ultra + Acrylic Case is the open source hardware platform, Banana PI BPI-M2 Ultra is a quad-core cortex -A7 CPU , use Allwinner R40 design, it support WIFI+BT on board.and support SATA interface on board.
Features:
CPU: Quad Core ARM Cortex A7 CPU GPU: Dual-core MALI-400 MP2 and runs at 500 MHz, capable of 1.1 Gpixel/s t RAM: 2G DDR3 SDRAM Storage: On Board 8GB eMMC Flash, Micro SD-Card slot, SATA interface support USB Ports: USB 2.0 PORT (x3)