Asus E394S-IM-AA User Manual page 78

Active Trip Point
This value controls the temperature of the ACPI Active Trip Point - the point
in which the OS will turn the fan on.
Configuration options: [15 C] [23 C] [31 C] [39 C] [47 C] [55 C] [60 C] [63 C]
[71 C] [79 C] [87 C] [95 C] [103 C] [110 C]
78 Single Board Computer