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Chapter 4: Motherboard Connections
Nvidia BF-3 DPU Header
NC-SI header, located at JNCSI1, is used for the NVIDIA BlueFrield®-3
DPU (Data Processing Unit). The BF-3 DPU supports up to 400Gb/s Ethernet or NDR
enhancement.
NVMe VPP Bus Connector
A NVMe VPP Bus connector is located at JNVVPP1 on the motherboard. The NVMe VPP
connector provides hot plug support for the NVMe devices, which will allow the user to replace
Onboard M.2-H Connector
A PCIe 3.0/SATA3 Hybrid M.2 slots is located at J40. This M.2/SATA3 hybrid connector
supports two PCIe 3.0 x4 Solid State Devices (SSDs) in the 2280 and 22110 form factors.
There are mounting holes to accommodate each form factor, M.2 MHA and M.2 MHB.
COM Port Pin Table Header for Debugging
A COM (communication) port pin table header used for debugging is located at JCOM1 on
the front side of the motherboard.
Universal Serial Bus (USB) Ports
The USB connector, located at JUSB1, supports two USB 3.0 ports (USB2/3) for front access.
These USB ports can be used for USB support via USB cables (not included).
PCIe 5.0 x8 via MCIO Vertical Connectors
This motherboard supports 20 PCIe 5.0 x8 via MCIO Vertical connectors that can be used
for PCIe high-speed storage devices. These connectors are supported by CPU 1 or CPU2.
PCIe 5.0 x8 via MCIO Vertical Connectors
Slot Location/Connector#
CPU Support Slot/Connector# CPU Support Slot/Connector#
CPU1 JPCIE1A1: P1_PE4 0~7 CPU2 JPCIE3A1: P2_PE4 0~7
CPU1 JPCIE1B1: P1_PE4 8~15 CPU2 JPCIE3B1: P2_PE4 8~15
CPU1 JPCIE2A1: P1_PE3 0~7 CPU2 JPCIE4A1: P2_PE3 0~7
CPU1 JPCIE2B1: P1_PE3 8~15 CPU2 JPCIE4B1: P2_PE3 8~15
CPU1 JPCIE5A1: P1_PE0 0~7 CPU2 JPCIE8A1: P2_PE0 0~7
CPU1 JPCIE5B1: P1_PE0 8~15 CPU2 JPCIE8B1: P2_PE0 8~15
CPU1 JPCIE6A1: P1_PE1 7~0 CPU2 JPCIE9A1: P2_PE1 7~0
CPU1 JPCIE6B1: P1_PE1 15~8 CPU2 JPCIE9B1: P2_PE1 15~8
CPU1 JPCIE7A1: P1_PE2 0~7 CPU2 JPCIE10A1: P2_PE2 0~7
CPU1 JPCIE7B1: P1_PE2 8~15 CPU2 JPCIE10B1: P2_PE2 8~15
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