Intel D850EMV2L - Desktop Board Motherboard, Руководство по эксплуатации продукта, Страница: 18 / 78

Intel Desktop Boards D850EMD2 and D850EMV2 Product Guide
18
Instantly Available Technology
CAUTION
For Instantly Available technology, the 5 V standby line for the power supply must be capable of
providing ad5 V standby current. Failure to provide adequate standby current when
using this feature can damage the power supply and/or affect ACPI S3 sleep state functionality.
CAUTION
If the standby current necessary to support multiple wake events from the PCI and/or USB buses
exceeds power supply capacity, the desktop board may lose register settings stored in memory.
Instantly Available technology enables the desktop board to enter the ACPI S3 (Suspend-to-RAM)
sleep state. While in the S3 sleep state, the computer will appear to be off. When signaled by a
wake-up device or event, the system quickly returns to its last known awake state.
The desktop board’s standby power indicator, shown in Figure 3 on page 18, is lit when there is
standby power to the system. This includes the memory modules and PCI bus connectors even
when the computer appears to be off.
If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the
LED turning amber.
OM13620
CR7F1
Figure 3. Location of the Standby Power Indicator
Power supplies used with these desktop boards must be able to provide enough standby current to
support the standard Instantly Available (ACPI S3 sleep state) configuration as outlined in Table 4.
Values are determined by specifications such as PCI 2.2. Actual measurements may vary.