FeaturesCPU: Allwinner H3, Quad-core Cortex-A7 Up to 1.2GHzDDR3 RAM: 256MB/512MBConnectivity: 10/100M EthernetUSB Host: Type-A x 1, 2.54 mm pin x 2MicroSD Slot x 1MicroUSB: for data transmission and power inputDebug Serial Port: 4Pin, 2.54 mm pitch pin headerGPIO: 2.54mm pitch 36pin. It includes UART, SPI, I2C, IO etcPCB Dimension: 40 x 40 mmPower Supply: DC 5V/2AOS/Software: u-boot and