I have tried contacting Asus tinkerboard division in the past regarding product specifications but they never replied. I have submitted my warranty claim today but I am worried they will not respond to me regarding that either. Any suggestions. Also my tinkerboard just decided to stop booting not sure why. it doesn;t have a case, but it was on a silicone mat for pcbs that is staic safe. Nothing touched while it was running so it didn't short out, I have an air purifier in the roomsor there not alot of dust, it has a passive heat sink so it shouldn't have overheated, it was connected to a 5v 2.4 amp usb charger it arrived with, and it was booting into android just fine the day before.