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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
Chassis Intrusion
Pin Denitions
Pin# Denition
1 Intrusion Input
2 Ground
PCIe 3.0 M.2 Slots
Two PCIe 3.0/SATA3 Hybrid M.2 slots are located at M.2-P1 and M.2-P2 on the motherboard.
These M.2/SATA3 Hybrid slots support PCIe 3.0 x4 M.2 NVMe/SATA3 SSDs in the 2280 and
22110 form factors. To accommodate the 2280 and 22110 form factors, two M.2 mounting
holes (MH15/MH16/MH17/MH18) are provided on the motherboard. Use Mounting Hole
MH15/MH16 for M.2-P2 slot support, and MH17/MH18 for M.2-P1 slot support. M.2 allows
MCIO NVMe Connectors
MCIO NVMe connectors, located at P1-PCIE1A/1B/2A/2B/3A/3B/4A/4B/5A/5B and P1-
PCIE1A/1B/2A/2B/3A/3B/4A/4B/5A/5B, provide twnety PCIe 5.0 x16 connections on the
motherboard. P1-PCIE1A~5B connections are supported by CPU1, and P2-PCIE1A~5B
connections, supported by CPU2. Use these MCIO connectors to support high-speed PCIe
storage devices.
Note: When installing an NVMe device on a motherboard, please be sure to connect
I-SATA 3.0 0~7 Ports
Two SATA 3.0 headers, located at JS1 and JS2, support eight SATA 3.0 connections
(SATA0~7) on the motherboard. These SATA 3.0 ports are supported by the Intel Intel® C741
chipset. Connect a proper SATA cable to JS1 and JS2 to use SATA 3.0 connections.
I/O Connector
A I/O riser connector, located on JSLOT1, provides dedicated BMC LAN/USB/VGA support
on the rear side of the motherboard.
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