Easy and fast installation Quick heat dissipation, simple and easy to use CPU Model: Allwinner H3 Number of Cores: Quad-core Frequency: 4*-A7 Up to 1.2GHz Memory RAM: 512MB Storage Micro-SD Slot: Micro-SD*1 for external storage up to 128GB Connectivity Ethernet: 10/100M Ethernet 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 OS Support FriendlyCore(based on UbuntuCore-16.04) OpenWrt 18.06 Armbian DietPi Lakka version Linux-4.4- U-boot-2017.11 (The development board bracket is transparent and the color of the protective film outside is random, don't accept the specified) Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:As Shown Material:PCB Package Contents: 1 x Motherboard 1 x Heat sink 4 x Screws and nuts 1 x Silicone patch 1 x Acrylic top panel 1 x Acrylic base 4 x M25 X 5+6mm single-pass copper pillar 4 x M3 X 5mm screws 4 x M3 X 6+6mm single-pass copper pillar 4 x M2.5 X 8mm screws 4 x M2.5 screws 4 x M3 X 30mm double-pass copper pillar 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.