Features: 1. For NanoPi Duo2 ("Duo2") only 55 x 25.4mm. It is powered by an Allwinner quad-core A7 processor H3 and has 256M/512M DDR3 RAM, onboard WiFi and Bluetooth modules, and an OV5640 camera interface. It works on Linux variants such as Core. 2. The for NanoPi Duo2 is small and compact, with abundant interfaces and ports. It takes power input from its MicroUSB port and can boot from a Micro-SD card. It is suitable for general breadboards. Interface pins such as USB, SPI, UART, I2C, PWM, IR, audio input and output, and Fast Ethernet. 3. For NanoPi Duo2 supports software utilities such as WiringNP and Python. These are all open source. It is suitable for IoT applications. Colour: Black Material: PCB+Metal Hardware Specifications: CPU: Allwinner H3, quad-core -A7 up to 1.2GHz DDR3 memory: 512MB Connectivity: 10/100M Ethernet Wi-Fi: 802.11b/g Bluetooth: Bluetooth V4.0 at 1, 2 and 3 Mbps Camera: Support OV5640 camera module key: GPIO key USB host: 2.54mm pin x2 exposed in 2.54mm pitch pin headers MicroSD slot x 1 MicroUSB: OTG and power input Debug serial interface: exposed to 2.54mm pitch header Audio input/output interface: exposed to 2.54mm pitch pin header GPIO1: 2.54mm pitch 16pin. It includes UART, SPI, I2C, audio, etc. GPIO2: 2.54mm pitch 16pin. It includes USB, 10/100M Ethernet, IO, etc. PCB size: 25.4 x 55mm Power supply: DC 5V/2A Temperature measurement range: -40°C to 80°C OS/Software: U-boot, Linux 4.11.2 (mainline), 16.04.2 (Xenial) Package Contents: 3 x development board 6 x 16Pin header 3 x antenna 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.