Hardware Support - Intel D850MVSE Specification

Intel Desktop Board D850MD/D850MV Technical Product Specification

1.14.2 Hardware Support

CAUTION
Ensure that the power supply provides adequate +5 V standby current if the LAN wake capabilities
and Instantly Available technology features are used. Failure to do so can damage the power
supply. The total amount of standby current required depends on the wake devices supported and
manufacturing options. Refer to Section 2.11.3 on page 80 for additional information.
The D850MD and D850MV boards provide several power management hardware features,
including:
Power connector
Fan connectors
LAN wake capabilities
Instantly Available technology
Wake from USB
Wake from PS/2 keyboard
PME# wake-up support
LAN wake capabilities and Instantly Available technology require power from the +5 V standby
line. The sections discussing these features describe the incremental standby power requirements
for each.
NOTE
The use of Wake from USB devices from an ACPI state requires an operating system that provides
full ACPI support.
1.14.2.1 Power Connector
When used with an ATX12V-compliant power supply that supports remote power-on/off, the
D850MD and D850MV boards can turn off the system power through software control. When the
system BIOS receives the correct command from the operating system, the BIOS turns off power
to the computer.
With soft-off enabled, if power to the computer is interrupted by a power outage or a disconnected
power cord, the computer returns to either an on or off state, based on the BIOS configuration,
when power resumes. The computer's response can be set using the After Power Failure feature in
the BIOS Setup program's Power menu.
For information about
The location of the power connector
The signal names of the power connector
The Power menu in the BIOS Setup program
The ATX specification
42
Refer to
Figure 14, page 60
Table 34, page 62
Section 4.6, page 113
Section 1.5, page 19