CPU: for Allwinner H3, -core -A7 Up to 1.2GHzDDR3 RAM: 256MB/512MB DDR3 RAMFor SD Slot x 1MicroUSB: OTG and power inputGPIO: two 2.54mm spacing 12x2pin header, one 2.54mm spacing 10x2pin headercolor: blueMaterial: PCBConnectivity: 10/100M EthernetUSB x3(included in 2.54mm pitch pin header)Debug Serial Port(4Pin, included in 2.54mm pitch pin header )Audio input/output Port(4Pin, included in 2.54mm pitch pin header )GPIO:It includes UART, SPI, I2C, IO etcPC Size: 40 x 40mmPower Supply: DC 5V/2ATemperature measuring range: -20 to 70OS/Software: U-, -Core and AndroidPackage Contents:1 x Development Board1 x Heat Sink1 x Silicone sticker4 x ScrewOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.