Non-hot-plug PCI riser board slot definitions

• Primary riser cage connector, connected to processor 1 or the southbridge

  	PCIe 3-slot riser cage*	PCIe 2-slot x16 riser cage
  1 - FL/FH	PCIe2 or PCIe3** x16 (16,8,4,2,1)	—
  2 - HL/FH	PCIe2 or PCIe3** x8 (8,4,2,1)	—
  3 - HL/FH	PCIe2 x8 (4,2,1)†	—

• Secondary riser cage connector, connected to processor 2 (Processor 2 must be installed)

  	PCIe 3-slot riser cage*	PCIe 2-slot x16 riser cage
  4 - FL/FH	PCIe2 or PCIe3** x16 (16,8,4,2,1)	PCIe2 or PCIe3** x16 (16,8,4,2,1)
  5 - HL/FH	PCIe2 or PCIe3** x8 (8,4,2,1)	PCIe2 or PCIe3** x16 (16,8,4,2,1)
  6 - HL/FH	PCIe2 or PCIe3** x8 (8,4,2,1)	—

*The server ships with one PCIe3 riser cage installed in the primary riser cage connector.

**These slots can run 8 GT/s signaling rate in either PCIe2 or PCIe3 mode, depending on the capability of the installed processor.

†PCIe slot 3 is connected to the southbridge and runs at the Gen2 signaling rate.

Notes:

• "Primary" denotes the riser cage is installed in the primary riser connector.
• "Secondary" denotes the riser cage is installed in the secondary riser connector.
• Installing the riser cages listed in the table above in either the primary or secondary riser connectors determines the form factor of the PCI cards supported by those riser cages.
• FL/FH denotes full-length, full-height. HL/FH denotes half-length, full-height. LP denotes low profile.
• The PCIe2 x16 riser cage supports a maximum power of 150 W with an HP power cable. This cable must be used for PCIe card wattages greater than 75 W.