CPU: Model: Rockchip RK3399, Number of Cores: 64-bit Dual Core -A72 and Core -A53, Frequency: -A72(up to 2.0GHz), -A53(up to 1.5GHz)GPU: -T864 GPU, supports OpenGL ES1.1/2.0/3.0/3.1, OpenCL, DX11, AFBCVPU: 4K VP9 4K 10bits H265/H264 60fps decoding, Dual VOP, etc. Memory RAM: Dual-Channel 4GB LPDDR3-1866Power Management: RK808-D PMIC, cooperated with DC/DC, enabling DVFS, software power-down, , system sleep mode.Storage:eMMC: 16GBFor -SD Slot: -SD x1 for external storage up to 128GBPCIe x1: M.2 M-Key PCIe X4 socket, compatible with PCIe 2.1, Dual operation mode;Onboard PCB nut for mounting M.2 2280 moduleConnectivity: Ethernet: Gbps EthernetWi-Fi: 802.11a/b/g/ac, AP6389SV ChipBluetooth: 4.1 dual-modePin-header: 40Pin GPIO Extension ports:1 x 3V/1.8V I2C, up to 2 x 3V UART, 1 x 3V SPI, 1 x SPDIF_TX, up to 8 x 3V GPIOs 1 x 1.8V I2S, 3 x 1.8V GPIOs: 3 x 1.8V inputs, 5 Pin 2.54mm headerDebug: 1 x Debug UART, 4 Pin 2.54mm header, 3V level, 1500000bps Button: Power Button x1, Reset Button x1, MASKROM() Button x1, x1LED: Power LED(Red) x1, STAT LED(Green) x1Others: IR receiver: Onboard IR receiver, Accepted 38KHz carrier frequency Battery: 2 Pin 1.27/1.25mm battery input connectorWorking Temperature: -20 to 70Power: DC 12V/2AOS Support:roid 8.1roid 10Lubuntu 16.04 (32-bit)FriendlyCore 18.04 (64-bit)FriendlyDesktop 18.04 (64-bit)FriendlyWrt 21.02.1 (64-bit) version: Linux-4.4-, U--2014.10PCB: 10 LayerDimension: 100 x 64mmMaterial: PCBcolour: bluePackage Contents:1 x development board2 x dual-b antenna1 x Heat Sink ( with rews)Only the above package content, other products are not included.Note: Light 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.