Dell Latitude 3540 (Late 2013) - Manual (Page 3)

In addition, to clarify memory volatility and data retention in situations where the system is put in different ACPI
power states the following is provided (those ACPI power states are S0, S1, S3, S4 and S5):
S0 state is the working state where the dynamic RAM is maintained and is read/write by the processor.
S1 state is a low wake-up latency sleeping state. In this state, no system context is lost (CPU or chip set) and
hardware maintains all system contexts.
S3 is called “suspend to RAM” state or stand-by mode. In this state the dynamic RAM is maintained. Dell
systems will be able to go to S3 if the OS and the peripherals used in the system supports S3 state. Linux, Win
2K and Win XP support S3 state.
S4 is called “suspend to disk” state or “hibernate” mode. There is no power. In this state, the dynamic RAM is
not maintained. If the system has been commanded to enter S4, the OS will write the system context to a
non-volatile storage file and leave appropriate context markers. When the system is coming back to the
working state, a restore file from the non-volatile storage can occur. The restore file has to be valid. Dell
systems will be able to go to S4 if the OS and the peripherals support S4 state. Win 2K and Win XP support S4
state.
S5 is the “soft” off state. There is no power. The OS does not save any context to wake up the system. No
data will remain in any component on the system board, i.e. cache or memory. The system will require a
complete boot when awakened. Since S5 is the shut off state, coming out of S5 requires power on which
clears all registers.
The following table shows all the states supported by Dell Latitude™ 3540:
Model
Number
S0 S1 S3 S4 S5
Dell Latitude™
3540
X X X X X
______________
© 2013 Dell Inc.
Trademarks used in this text: Dell™, the DELL logo, Dell Precision™, OptiPlex™, Latitude™, PowerEdge™, PowerVault™, PowerConnect™,
OpenManage™, EqualLogic™, KACE™, FlexAddress™ and Vostro™ are trademarks of Dell Inc. Intel®, Pentium®, Xeon®, Core™ and Celeron® are
registered trademarks of Intel Corporation in the U.S. and other countries. AMD® is a registered trademark and AMD Opteron™, AMD Phenom™, and
AMD Sempron™ are trademarks of Advanced Micro Devices, Inc. Microsoft®, Windows®, Windows Server®, MS-DOS® and Windows Vista® are
either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. Red Hat Enterprise Linux® and
Enterprise Linux® are registered trademarks of Red Hat, Inc. in the United States and/or other countries. Novell® is a registered trademark and SUSE ™
is a trademark of Novell Inc. in the United States and other countries. Oracle® is a registered trademark of Oracle Corporation and/or its affiliates. Citrix®,
Xen®, XenServer® and XenMotion® are either registered trademarks or trademarks of Citrix Systems, Inc. in the United States and/or other countries.
VMware®, Virtual SMP®, vMotion®, vCenter®, and vSphere® are registered trademarks or trademarks of VMWare, Inc. in the United States or other
countries.