https://www.androidmotherboards.com/ EMMC: 8GB-128GB EMMC memory(unlimited) Video Output: support HDMI, MIPI format video output Audio Output: stereo sound Ethernet: Support for 10MHZ/100MHZ/1000MHZ wired Wireless Network: 2.4G/5G wireless WIFI Internet access Operating System: ANDROID7.1 PCB Size:112mmX100.5mm Power Input: C5V/3A input 3.7V lithium battery Dual-screen Different Display: support