System Versions

1. Kernel version: 4.4.20
2. Android version: 6.0.1 (Android-x86-6.0-r3), based on the Android open-source code base.
3. BIOS version: R0.9 (UPC1DM09) or newest for UP Board

Support Feature

1. Support HDMI audio for UP board.
2. Support I2S/I2C/GPIO/PWM/UART functions for HAT 40pins for UP board.
3. Support 4 port USB
4. Support LAN port.
5. Support OpenGL ES hardware acceleration.
6. Support Audio Carrier Board
   1. Buzzer buzzed when power button pressed with audio daughter board connected and PWM1 function enabled in BIOS menu.
   2. Analog Mic and Digital Mic cannot record at the same time
   3. Not support audio output from headphone when onboard speaker is enabled
7. Support booting from UEFI and installing to UEFI disk.

Beta version limitation

1. Not support MIPI CSI
2. Not Support GPS
3. Not Support USB OTG (Host mode only)
4. Not Support Power Button Long Press function. (Need BIOS support)