IEI Technology WAFER-ULT-i1, User Manual, Page: 95 / 164

WAFER-ULT/ULT2-i1 3.5" SBC
Page 80
5.3.2 ACPI Settings
The ACPI Settings menu ( BIOS Menu 4 ) configures the Advanced Configuration and
Power Interface (ACPI) options.
Aptio Setup Utility – Copyright (C) 2015 American Megatrends, Inc.
Advanced
ACPI Settings
ACPI Sleep State [S1 (CPU Stop Clock)]
Select the highest ACPI
sleep state the system
will enter when the
SUSPEND button is
pressed.
----------------------
ÆÅ
: Select Screen
↑ ↓
: Select Item
Enter: Select
+/-: Change Opt.
F1: General
Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
Version 2.17.1246. Copyright (C) 2015 American Megatrends, Inc.
BIOS Menu 4: ACPI Settings
Î
ACPI Sleep State [S1 (CPU Stop Clock)]
Use the ACPI Sleep State option to specify the sleep state the system enters when it is
not being used.
Î
S1 (CPU Stop
Clock)
D
EFAULT
The system enters S1 (POS) sleep state. The
system appears off. The CPU is stopped; RAM is
refreshed; the system is running in a low power
mode.
Î
S3 (Suspend to
RAM)
The caches are flushed and the CPU is powered
off. Power to the RAM is maintained. The
computer returns slower to a working state, but
more power is saved.