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Headers
Fan Headers
There are four 4-pin fan headers on the motherboard. Pins 1-3 are backward compatible with
traditional 3-pin fans. The onboard fan speeds are controlled by Thermal Management (via
Hardware Monitoring) in the BIOS. When using Thermal Management setting, please use all
3-pin fans or all 4-pin fans.
Speaker Header
On the JD1 header, pins 1-4 are for the internal speaker.
UID
VGA
JPG1
Intel
COM1
X557-AT2
SRW2
A
C
LEDM1
BMC
AST2400
SRW1
JMD1
5
JD1
M.2:PCI-E 3.0 X2 / I-SATA
JL1
1
JSAS2
I-SATA
8-11
JSAS1
JI2C1:
I-SATA
1-2:ENABLE
2-3:DISABLE
4-7
JI2C2:
1-2:ENABLE
2-3:DISABLE
4
I-SATA1
I-SATA2
JSD1
I-SATA0
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
Speaker Connector
Pin Definitions
Pin Setting
Definition
Pins 1-4
Speaker
PRESS FIT
JPTG1
JWD1
A
LAN1
LAN2
C
C
C
C
LAN3
LAN4
Intel SoC
FCBGA1310
JPME2:
1-2:NORMAL
2-3:ME MANUFACTURING MODE
JF1
I-SATA3
JTPM1
JRT4
JRT3
PWR
NIC
NIC
HDD
RST
X
OH/FF
ON
2
1
LED
LED1
A
3
37
1. FAN1
2. FAN2
3. FAN3
IPMI LAN
USB0/1
4. FANA
5. Speaker Header
JBT1
BT1
JTGLED1
JPV1
PWR
LED
2
1
Chapter 2: Installation
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