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Chapter 4: Motherboard Connections
Intel RAID Key Header
The JRK1 header allows you to enable RAID functions for NVMe connections. Refer to the
table below for pin definitions.
Intel RAID Key Header
Pin Definitions
Pin#
Defintion
1
GND
2
PU 3.3V Stdby
3
GND
4
PCH RAID KEY
NVM Express Connections
There are two Slimline SAS connectors located on the motherboard to support two PCIe
4.0 x4 NVMe connections. This connector provides high-speed and low-latency connections
directly from the CPU to NVMe Solid State (SSD) drives. This greatly increases SSD data-
throughput performance and significantly reduces PCIe latency by simplifying driver/software
requirements resulting from direct PCIe interface from the CPU to the NVMe SSD drives.
NVME0/1 Connector
Pin Definitions
Pin#
Signal
Pin#
Signal
1
GND
20
RX4P
2
RX0P
21
RX4N
3
RX0N
22
GND
4
GND
23
RX5P
5
RX1P
24
RX5N
6
RX1N
25
GND
7
GND
26
SB7B
8
SB7A
27
SB4B
9
SB4A
28
GND
10
GND
29
SBB+
11
SBA+
30
SBB-
12
SBA-
31
GND
13
GND
32
RX6P
14
R2XP
33
RX6N
15
RX2N
34
GND
16
GND
35
RX7P
17
RX3P
36
RX7N
18
RX3N
37
GND
19
GND
