Chapter 5: Advanced Serverboard Setup
5-15
Fan Headers
There are 10 fan headers on the
serverboard, all of which are 4-pin
fans (pins 1-3 of the fan headers
are backward compatible with the
traditional 3-pin fans). See the table
on the right for pin defi nitions. The
onboard fan speeds are controlled by
Thermal Management (via Hardware
Monitoring) under the Advanced Sec-
tion in the BIOS (with 4-pin fans only).
The default is Full Speed.
NMI Button
The non-maskable interrupt button
header is located on pins 19 and 20
of JF1. Refer to the table on the right
for pin defi nitions.
NMI Button
Pin Defi nitions (JF1)
Pin# Defi nition
19
Control
20
Ground
Fan Header
Pin Defi nitions
Pin# Defi nition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
Power On LED
The Power On LED connector is lo-
cated on pins 15 and 16 of JF1 (use
JLED for a 3-pin connector). This
connection is used to provide LED
indication of power being supplied to
the system. See the table on the right
for pin defi nitions.
Power LED
Pin Defi nitions (JF1)
Pin# Defi nition
15
5V Stby
16
Control
Chassis Intrusion
A Chassis Intrusion header is located
at JL1 on the motherboard. Attach an
appropriate cable from the chassis to
inform you of a chassis intrusion when
the chassis is opened.
Chassis Intrusion
Pin Defi nitions
Pin# Defi nition
1
Intrusion Input
2
Ground
