Table 24. I/O-tray connectors
Callout Callout
1 Riser for slots 1 through 4 connector (Riser 1) 7 ML2 PCIe3, x16 connector (Slot 8)
2 PCIe3, x16, 75 watt connector (Slot 5) 8 Network (LOM) connector (Slot 9)
3 PCIe3, x16, 75 watt connector (Slot 6) 9 TCM connector (see “Enable TPM/TCM” in the Lenovo
ThinkSystem SR950 Maintenance Manual
)
4 PCIe3, x8, 25 watt connector (Slot 7) 10 Riser for slots 10 through 15 connector (Riser 2)
5 Signal cable to power backplane 11 M.2 SATA/PCIe (Hypervisor) backplane connector
(see note following this table)
6 Battery (CR2032) 12 Riser for slots 16 and 17 connector (Riser 3)
Notes: The following PCIe “slots” are assigned to components elsewhere in the server:
• PCIe slot 18 is assigned to the RAID card in the lower tray.
• PCIe slot 19 is assigned to the RAID card in the upper tray.
• PCIe slot 20 is assigned to the M.2 backplane inside the I/O tray.
I/O-tray riser connectors
The following illustrations show the internal connectors on the I/O-tray risers.
Up to three risers can be installed in the I/O-tray. The chassis supports the following riser configurations:
• Riser 1 connector:
– The slot 1 through 4 riser provides four PCIe3 x8, full height, half length connectors.
– The slot 1 through 4 riser provides four PCIe x16, full height, half length connectors. (8-processor
systems only)
– The slot 3 and 4 riser provides two PCIe3 x16, full height, half length connectors.
• Riser 2 connector:
– A slot 10 through 13 riser provides four PCIe3 x8, full height, half length connectors.
– A slot 12 and 13 riser provides two PCIe3 x16, full height, half length connectors.
– A slot 10 through 15 riser provides five PCIe3 x16, full height, half length connectors and one ML2
PCIe3 x16 connector.
• Riser 3 connector:
– The slot 16 and 17 riser provides two PCIe3 x8, full height, half length connectors.
Slot 1 through 4 and slot 10 through 13 riser connectors
There are four PCIe3 x8, full height, half length connectors each in the slot 1 through 4 (riser connector 1) and
slot 10 through 13 (riser connector 2) risers.
Appendix B. Component reference 105
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