... : (specially for pico projector)a. board 301: Multimedia I/O: HDMI in, USB2.0, SD card, A/V in, VGA, Audio ... Battery: Yes, 1 Hour battery lifeProjector Sample: Avaliableb.board 302: Android 2.1OS with WIFI I/O: VGA, USB2.0 input ... battery lifeProjector Sample: Avaliabled. board 304: Accessory projector I/O: HDMI in,A/V in, VGA, Audio outvideo compatibility: No video ...