H2-i3-7100U Mini PC details:
Here is guide, no worry your pc support auto on after a power loss.
Setp 1: Press On/Off Switch on the pc and then keep press “Delete”until goes into bios, and then using directiion key to go to “Chipset”, and then select “PCH_IO configuration”, press “Enter” Key and go to setp 2.
Step 2: Find “State After G3” under “PCH_IO configuration” page, change “s5 state” to “s0 state”, press “Enter” key.
Step3: Press “F10” key to save the setting and finish the setting. From now on any illegal shutdown will bring auto power on after the pc connect to main supply.
Remark: H2-i3-7100U purchase link: https://www.hystou.com/fanless-mini-pc/kaby-lake-fanless-pc/h2-mini-pc-i3-7100u