Secondary riser connector - connected to processor 2 (processor 2 must be installed)
4 - FL/FH PCIe2 or PCIe3 x16 (16, 8, 4, 2, 1)
5 - HL/FH PCIe2 or PCIe3 x16 (16, 8, 4, 2, 1)
6 - HL/FH —
FL/FH = full-length, full-height
HL/FH = half-length, full-height
For PCIe slot power capabilities, riser board installation instructions, and riser cage installation instructions, see the user
guide.
*PCIe slot 3 is connected to the southbridge, and runs at 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.
●
Slots can generally run at 8 GT/s signaling rate in either PCIe2 or PCIe3 mode, depending on
the capability of the installed processor.
●
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.
Non-hot-plug PCI riser board slot definitions 9
