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Chapter 3 Motherboard Connections
Serial General Purpose I/O Header
One S-SGPIO (Serial Link General Purpose Input/Output) header is on the motherboard.
Refer to the tables below for pin definitions.
SGPIO Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
Clock2
2
Load2
3
GND
4
Data1
5
Load1
6
GND
7
Clock1
8
Data2
Power SMB (I
2
C) Header
The Power System Management Bus (I
2
C) connector (JPI
2
C1) monitors the power supply,
fan, and system temperatures. Refer to the table below for pin definitions.
Power SMB Header
Pin Definitions
Pin#
Definition
1
Clock
2
Data
3
PMBUS_Alert
4
Ground
5
NC
SMBus Header
A System Management Bus header for IPMI 2.0 is located at JIPMB1 (for IPMI only). Connect
the appropriate cable here to use the IPMB I
2
C connection on your system. Refer to the table
below for pin definitions.
External I
2
C Header
Pin Definitions
Pin#
Definition
1
Data
2
GND
3
Clock
OCuLink Connector
The X11SDV-4C-TLN2F includes an OCuLink connector, which can be used either for high-
performance storage connectivity via the NVMe interface or for additional SATA storage.
Depending on the setting of jumper JNS1, this OCuLink connector (P1NVMe0) can be utilized
as four SATA ports or as a single U.2 NVMe port. NVMe provides lower data latency for
increased efficiency and storage performance.
