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Chapter 4: Motherboard Connections
M.2 Slot
The X12DAi-N6 motherboard has two M.2 slot (JM2_1 and JM2_2). 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 socket on the
motherboard supports PCIe 4.0 x4 (32 Gb/s) SSD cards in the 2280 and 22110 form factors.
Note:
JM2_2 cannot be used if a graphics card is installed in any of the PCIe slots 1-5.
VROC Intel RAID Key Header
A VROC RAID Key header is located at JRK1 on the motherboard. Install a VROC RAID
Key on JRK1 for NVMe RAID support as shown in the illustration below. Please refer to the
layout in Chapter 1 for the location of JRK1.
Intel RAID Key Header
Pin Definitions
Pin#
Defintion
1
GND
2
PU 3.3V Stdby
3
GND
4
PCH RAID KEY
VROC Key
VROC Key Header (JRK1)
T-SGPIO 1/2/3 Headers
The T-SGPIO (Serial General Purpose Input/Output) headers are used for the onboard SATA
devices to communicate with the enclosure management chip on the backplane. See the
table below for more information.
T-SGPIO 1/2/3 Headers
Pin Definitions
T-SGPIO 1/2/3 Headers
Corresponding SATA Device Support
Pin#
Definition
Pin#
Definition
T-SGPIO#
SATA Devices Supported
1
NC
2
NC
T-SGPIO1
SATA1-6
3
Ground
4
DATA Out T-SGPIO2
SATA7/8 (SATADOM's)
5
Load
6
Ground
T-SGPIO2
S-SATA1/2
7
Clock
8
NC
NC = No Connection