pcDuino3 Nano Lite CPU: AllWinner A20 SoC, 1GHz ARM Cortex A7 Dual Core GPU: OpenGL ES2.0, OpenVG 1.1, Mali 400 Dual Core DRAM: 1GB Onboard Storage: NO Flash, microSD card (TF) slot for up to 32GB Arduino extension interface: Arduino sockets, same as Arduino UNO 14xGPIO, 2xPWM, 6xADC, 1xUART, 1xSPI, 1xI2C