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M.2 M-Key PCIe 5.0 Connector (2280/22110)
The motherboard has two M.2 slots at JMD1 and at JMD2. 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. JMD1 and JMD2 support M-Key
PCIe 5.0 devices in the 2280 and 22110 form factors.
NC-SI Interface for IPMI Shared LAN Function
A Network-Controller Sideband Interface (NC-SI) header is located at JNCSI1 on the
motherboard. For remote management, connect the appropriate cable from this header
to an add-on card to provide the out-of-band (sideband) connection between the onboard
Baseboard Management Controller (BMC) and a Network Interface Controller (NIC). For
the network sideband interface to work properly, you will need to use an NIC add-on card
that supports NC-SI and also need to use a special cable. Refer to the table below for pin
definitions.
MH1
MH2
FAN3
FAN4
JPME2
MH3
JB1
JBR1
JDBG1
CPU
JVRM1
JSPD1
1
JMD1
2280
MT1_1
22110
MT1_2
JSXB1C
MH7
BIOS
LICENSE
JNCSI1
X13SEED-F
REV:1.01
DESIGNED IN USA
3
PCH
JP2
JIPMB1
JPFR3
MH8
JPFR2
JP1
JP13
JBM1
JPT1
JPL1
BMC
JL1
JCP1
JPFR1
JLAN1
MH9
MH10
MH11
MH12
JKVM1
SW2
LED4
PRESS FIT
LED7
LED6
MH4
FAN1
FAN2
2
JMD2
JRK1
BT1
2280
MT2_1
22110
MT2_2
MH6
MH5
41
NC-SI Header
Pin Definitions
Pin#
Definition
Pin#
1
Clock
2
3.
CRS_DV
4
5
RX_D0
6
7
RX_D1
8
9
TX_D0
10
11
TX_D1
12
13
TX_EN
14
15
ARB_IN
16
17
Power
18
19
Power
20
21
Power
22
1. M.2 M-Key Connector (JMD1)
2. M.2 M-Key Connector (JMD2)
3. NC-SI Interface
Chapter 2: Installation
Definition
GND
GND
GND
GND
GND
GND
PRST_IN
ARB_OUT
Power
Power
NC
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