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Chapter 4: Motherboard Connections
4.2 Headers and Connectors
Fan Headers
There are three 4-pin fan headers on the motherboard. Although pins 1-3 of the fan headers
are backward compatible with the traditional 3-pin fans, we recommend you use 4-pin
fans to take advantage of the fan speed control via Pulse Width Modulation through the
thermal management. This allows the fan speeds to be automatically adjusted based on the
motherboard temperature.
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
2.5A/+12V (Red)
3
Tachometer
4
PWM_Control
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to inform you of a chassis intrusion when the chassis is opened. Refer to
the table below for pin definitions.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input
2
Ground
General Purpose I/O Header
The JGP1 (General Purpose Input/Output) header is a general purpose I/O expander on a
pin header via the SMBus. Each pin can be configured to be an input pin or output pin in
2.54mm pitch. Refer to the table below for pin definitions.
JGP1 Header
Pin Definitions
Pin#
Definition
1
3.3V
2
Ground
3
GP0
4
GP1
5
GP2
6
GP3
7
GP4
8
GP5
9
GP6
10
GP7
JSPKR1
MH2
JMD2_SRW2
JPL1
JPL2
JP
AC1
JPME2
JWD1
JI2C1
JI2C2
CPU SLOT7 PCI-E 3.0 X16
JMD1_SRW1
JMD2_SRW1
JMD2
LED1
JGP1
JF1
FAN2
FANA
MH1
I-SATA2
COM1/2
USB0/1
USB2/3
I-SATA1
JTPM1
JPH1
JPT1
JPW1
JPV1
FAN1
MH4
BAR CODE
MAC CODE
DIMMA1
DIMMB1
JMD1
M.2-P
(PCIe)
JLCDPWR1
LVDS1
JVRM1
JRF2
JRF1
MH3
HDMI
HDMI2.0
DP
USB6/7
USB4/5
BT1
LAN1
LAN2
LINE_OUT
MIC_IN
X12SCV-LVDS
DESIGNED IN USA
REV:1.01
CPU1
PCH
W480E
JBT1
JSD1
M.2-H
(PCIe/SATA)
JD1
JL1
Pin 10 Pin 9
Pin 8
Pin 7
Pin 6
Pin 5
Pin 4
Pin 3
Pin 2
Pin 1
