IEI Integration NANO-LX v1.21 - Manual (Page 136)

NANO-LX EPIC SBC
Page 121
6.6 Power Management Setup
Use the Power Management Setup menu (BIOS Menu 8) to set the BIOS power
management and saving features.
BIOS Menu 8: Power Management Setup
AC Power Mode [ATX]
Use the AC Power Mode option to select the power mode.
ATX (Default) The system is in ATX mode.
AT The system is in AT power mode.
Soft-Off by PWR-BTTN [Instant-Off]
Use the Soft-Off by PWR-BTTN option to enabled the system to enter a very
low-power-usage state when the power button is pressed.
Instant-Off (Default) When the power button is pressed, the system is
immediately shutdown.
Delay 4-sec To shutdown the system the power button must be held