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Chapter 3: Maintenance and Component Installation
Expansion Slot Configurations
Item
Description
1-2
Configurable from CPU 1 to: one full-height, full-length x16 (slot 1) or
two x8 full-height, half-length x8 (slots 1 and 2)
3
Full-height, half-length x16 from CPU 1
4-5
Configurable from CPU 2 to: one full-height, full-length x16 (slot 5) or
two x8 full-height, half-length x8 (slots 4 and 5)
6
Full-height, half-length x16 from CPU 2
Full-height = 4.2", Low-profile = 2.5", Full-length = 10.5", Half-length = 6.6"
Configurations of PCIe Connections
Slots 1 and 2 on riser card on RSC-D2-668G4 (see picture below) can be connected for use
in several ways using motherboard headers P1-PCIE0 and P1-PCIE1.
•
To enable slot 1 as x16, both headers are connected to the riser card at CN2 and CN3.
This applies for a GPU using slot 1. Slot 2 is disabled. (More details on GPU in section 6.1).
•
To enable slot 1 as x8 and slot 2 as x8, headers are connected to CN1 and CN3.
•
If P1-PCIE0 or P1-PCIE1 are used for NVMe storage connections, that header cannot be
used for riser card connections, and slots 1 and 2 are unavailable.
Figure 3-17. Expansion Card Slots in the Chassis
6
1
5
4
3
2
3.10 PCIe Expansion Cards
The system can accommodate six PCIe 4.0 cards or two double-width GPUs and two PCIe
cards.
Limitations for Slots 1, 2, 4, and 5
The expansion card capability varies depending on your NVMe storage drive configuration.
Due to PCIe 4.0 requirements, riser card slots 1 and 2 are connected by cable to P1_PCIE0/1,
and slots 4 and 5 are connected by cable to P2_PCIE0/1 headers on the motherboard. That
header can be used for NVMe storage drive connection or expansion cards, but not both.
