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Chapter 4: Motherboard Connections
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate
cable from the chassis to inform you when the chassis is opened. Refer to the table below
for pin definitions.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input
2
Ground
NVMe SMBus Headers
NVMe SMBus (I
2
C) header (JNVI2C1), used for PCIe SMBus clock and data connections,
provides hot-plug support via a dedicated SMBus interface. This feature is only available for
a Supermicro complete system with an SMCI-proprietary NVMe add-on card and a proper
cable installed. Refer to the table below for pin definitions.
NVMe SMBus Header
Pin Definitions
Pin#
Definition
1
Data
2
Ground
3
Clock
4
+3.3V
SlimSAS NVMe Connectors
Four SlimSAS NVMe connectors (P1_NVME0 - P1_NVME3) provide eight NVMe U.2
connections. Use these NVMe connections to attach high-speed PCIe storage devices.
Note:
When installing an NVMe device on a motherboard, please be sure to connect the first
NVMe port (P1_NVME0) first for your system to work properly.
