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Chapter 4: Motherboard Connections
SGPIO Headers
Two I-SGPIO (Serial Link General Purpose Input/Output) headers (I-SGPIO1, I-SGPIO2) are
located on the motherboard. They are used to communicate with the enclosure management
chip on the backplane support the onboard I-SATA 3.0 ports. Refer to the table below for pin
definitions.
S-SGPIO Header
Pin Definitions
Pin#
Definition
Pin#
Definition
1
NC
2
NC
3
Ground
4
Data
5
Load
6
Ground
7
Clock
8
NC
NC = No Connection
SATA Ports
Six Serial ATA (SATA) 3.0 connectors (I-SATA0~5) are located on the motherboard. These
I-SATA 3.0 ports are supported by the Intel C252 PCH chip (supports RAID 0, 1, 5, and 10).
SATA ports provide serial-link signal connections, which are faster than legacy Parallel ATA.
Refer to the table below for pin definitions.
Note:
For more information on the SATA HostRAID configuration, refer to the Intel SATA
HostRAID user's guide posted at
https://www.supermicro.com/support/manuals/
M.2 Slot
This motherboard has one M.2 connector. M.2 was formerly known as Next Generation
Form Factor (NGFF) and serves to replace mini PCIe. M.2 allows for a variety of card sizes,
increased functionality, and spatial efficiency. The M.2 slot on this motherboard supports PCIe
3.0 x4 in the 2280 and 22110 form factors.
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
+3.3V
