The server supports up to six PCIe slots with different riser cards installed into two riser sockets on the system planar (one riser socket supports installation of one riser card). Riser 1 supplies slots 1, 2, and 3. Riser 2 supplies slots 4, 5, and 6. Standard models have Riser card 1 installed with three PCIe 3.0 x8 slots. To enable slots 4 - 6, install a second processor and a second riser card.

The following table lists the PCI riser card options available.

Table 13. PCI riser card options

The slot form factors are as follows:

• Slot 1: PCIe x8, PCIe x16, or PCI-X; full-height, full-length
• Slot 2: PCIe x8 or PCI-X; full-height, half-length (not present if Riser 1 contains 90Y5085 riser card)
• Slot 3: PCIe x8 or PCIe x16; full-height, half-length (not present if Riser 1 contains 69Y5322 riser card)
• Slot 4: PCIe x8, PCIe x16, or PCI-X; full-height, full-length
• Slot 5: PCIe x8 or PCI-X; full-height, full-length (not present if Riser 2 contains 90Y5085 riser card)
• Slot 6: PCIe x8 or PCIe x16; full-height, half-length (not present if Riser 2 contains 69Y5322 riser card)

The slots are shown in the following figure.


Figure 6. Slot dimensions

The specific slots that are available depend on the riser cards installed in Riser socket 1 and Riser socket 2, as shown in the following table. Standard models have 69Y5321 installed in Riser socket 1.

Tip: All slots support full-height adapters. Slots 1, 4, and 5 support full-length adapters, whereas slots 2, 3, and 6 (when present) support half-length adapters.

Table 14. PCIe slot descriptions (FH=full height, FL=full length, HL=half length, DW=double width)

Note: Slots 4, 5, and 6 require a second processor to be installed.