Hardware options installation  93 
b. 
Install the FlexibleLOM 2U node riser cage assembly and secure it with five T-10 screws. 
 
 
 
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. 
 
 
 
IMPORTANT: If the PCIe riser cage assembly is not seated properly, then the server does 
not power up. 
 
9.  Install the node into the chassis ("Installing a node into the chassis" on page 60). 
10.  Connect all peripheral cables to the nodes. 
11.  Power up the node ("Power up the nodes" on page 32). 
 
Three-slot riser cage assembly options 
 
  NOTE: A second processor is required to install a three-slot riser cage assembly. 
 
 
 
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 (on page 26)." 
 
To install the component: 
1.  Power down the node (on page 32). 
2.  Disconnect all peripheral cables from the node. 
3.  Remove the node from the chassis (on page 32). 
4.  Place the node on a flat, level surface. 
5.  Remove the 2U rear I/O blank ("Remove the rear I/O blank" on page 39).