NOTE: Three-slot riser cage assemblies feature different riser boards. For more information on the riser board slot specifications, see "PCIe riser board slot definitions."
CAUTION: To prevent improper cooling and thermal damage, do not operate the
node
unless all PCI riser cages or rear I/O blanks are installed, and do not operate the node unless all PCI slots have either an expansion slot cover or an expansion board installed.