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Chapter 4: Motherboard Connections
4.5 PCIexpress Slots
PCIexpress 4.0 x16
There are two PCIe 4.0 x16 slots on the motherboard. Slot 1 and Slot 2 are supported by
CPU1 through the riser cards. Refer to the layout on Section 1.1 for their location.
PCIexpress 3.0 x4
There are two PCIe 3.0 x4 slots supported by CPU2. They are located at JF2 and SXB1.
SXB1 is also used for SATA0~5. Refer to the layout on Section 1.1 for their location.
PCIexpress 4.0 x24
A PCIe 4.0 x24 slot supported by CPU2 is located at SXB2. Refer to the layout on Section
1.1 for the location.
Powered SATA DOM (SuperDOM)
A SATA DOM (Device-on-Disk) is located at SATA6 on the motherboard. SATA6 is used with
a Supermicro SuperDOM, which is a yellow SATA DOM connector with a power pin built in,
and no external power supply is needed. Supermicro SuperDOM is backward-compatible with
a regular SATA HDD or SATA DOM that requires an external power supply.
SIOM Networking Slot
There is one SIOM (Super I/O Module) networking slot (PCIe 4.0 x16+1) on the motherboard.
See the layout on Section 1.1 for the location.