ItemItem DescriptionDescription DefinitionDefinition
1 PCI Express version Each PCIe version corresponds to a specific data transfer rate between
the processor and peripheral devices. Generally, a version update
corresponds to an increase in transfer rate.
PCIe 1.x
PCIe 2.x
PCIe 3.x
PCIe 4.x
PCIe 5.x
The PCIe technology is under constant development. For the latest
information, see the PCI-SIG websitePCI-SIG website.
2 Physical connector link width PCIe devices communicate through a logical connection called an
interconnect or link. At the physical level, a link is composed of one or
more lanes. The number of lanes is written with an x prefix with x16
being the largest size in common use.
x1
x2
x4
x8
x16
3 Negotiable link width These numbers correspond to the maximum link bandwidth supported by
the slot.
Supported PCIe form factorsSupported PCIe form factors
All slots support full-height expansion cards. Use the following information to find supported lengths for each slot.
Primary riser connectorPrimary riser connector
PCIe slot and card lengthPCIe slot and card length 3-slot riser*3-slot riser* 3-slot riser (Optional)3-slot riser (Optional)
Slot 1 - Full-length/Full-height (FL/FH) PCIe5 x8 (8, 4, 2, 1) PCIe5 x16 (16, 8, 4, 2, 1)
Slot 2 - Full-length/Full-height (FL/FH) PCIe5 x16 (16, 8, 4, 2, 1) PCIe5 x16 (16, 8, 4, 2, 1)
Slot 3 - Half-length/Full-height (HL/FH) PCIe5 x8 (8, 4, 2, 1) PCIe5 x16 (16, 8, 4, 2, 1)
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