model:NEO V1.4 OS Support:FriendlyCore(based on UbuntuCore-16.04);OpenWrt 18.06;Armbian;DietPi;Lakka;Kali Kernel version:Linux-4.4-LTS;U-boot-2017.11 PCB:6 Layer CPU: Model: Allwinner H3 Number of Cores: Quad-core Frequency: 4*Cortex-A7 Up to 1.2GHz Memory:RAM: 256MB / 512MB Storage:MicroSD Slot: MicroSD*1 for external storage up to 128GB Connectivity:Ethernet: 10/100M Ethernet Audio:Audio input/output Port: 5Pin, 2.0mm pitch pin header USB : Micro-USB*1: Micro-USB 2.0, OTG & Power In, Type A USB Host: 2.0 Type A*1, 2.54 mm pin*2 Pin-header: GPIO: 2.54mm pitch 36pin. It includes UART, SPI, I2C, IO etc Serial Debug Port: 2.54mm pitch 4-pin-header Audio input/output Port: 2.0mm pitch 5-pin header LED:Power LED(Red)*1;System LED(Green)*1 Others:Working Temperature: -20℃ to 70℃ Power:Micro-USB DC 5V/2A Dimension:40 x 40mm Material: PCB+Metal colour: Black Package Contents: 1 x NanoPi NEO complete machine (including development board+heat sink+shell) 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.