CPU: for Allwinner H3, Quad-core Cortex-A7 Up to 1.2GHz For SD Slot x 1 MicroUSB: OTG and power input GPIO: two 2.54mm spacing 12x2pin header, one 2.54mm spacing 10x2pin header Connectivity: 10/100M Ethernet USB Host 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 etc Power Supply: DC 5V/2A Temperature measuring range: -20℃ to 70℃ OS/Software: U-boot, Ubuntu-Core and Android DDR3 RAM: 512MB DDR3 RAM Model Number: NanoPi NEO Interface: 3 x USB2.0 USB Host: USB Type A USB 2.0: x 3 Memory Capacity: 512MB color:Silver Material:Metal size:47 x 44.5 x 31mm Package Contents: 1 x Development Board+OLED Kit 1 x Screwdriver 1 x 16G/32G memory card (Random, don't accept the specified.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.