Server Board Features
14
Intel
®
Server Board S1200KP Product Guide
Hardware Support
Power Connectors
ATX12V-compliant power supplies can turn off the computer power through system control. When
an ACPI-enabled computer receives the correct command, the power supply removes all non-
standby voltages.
When resuming from an AC power failure, the computer returns to the power state it was in before
power was interrupted (either on or off). The computer’s response can be set by using the Last
Power State feature in the BIOS Setup program’s Boot menu.
The Server Board has two power connectors. See Figure 20 on page 38 for the location of the
power connectors.
Fan Headers
The function/operation of the fans is as follows:
The fans are on when the board is in the ACPI S0 state.
The fans are off when the computer is in the ACPI S3, S4, or S5 state.
Each fan header is wired to a tachometer input.
All fan headers support closed-loop fan control that can adjust the fan speed or switch the fan
on or off as needed.
All fan headers have a +12 V DC connection (up to 12 V DC when using 3-wire chassis fans).
All fan headers are controlled by Pulse Width Modulation.
The chassis fan header supports linear fan control on 3-wire fans.
The Server Board has a 4-pin processor fan header and two 4-pin chassis fan headers compatible
with 4-wire and 3-wire chassis fans.
LAN Wake Capabilities
CAUTION
For LAN wake capabilities, the 5 V standby line for the power supply must
be capable of delivering ad5 V standby current. Failure to provide
adequate standby current when using this feature can damage the
power supply.
LAN wakeup capabilities enable remote wake-up of the computer through a network. The LAN
subsystem monitors network traffic and upon detecting a Magic Packet* frame, it asserts a wake-up
signal that powers up the computer.
