Figure 91. PCIe expansion tray installation
After installing the PCIe expansion tray, complete the following steps:
1.  Install the 4U PCIe riser assemblies (see “Install a 4U PCIe riser assembly” on page 126).
2.  Install the top cover (see 
“Install the top cover” on page 128).
3.  If the server is installed in a rack, reinstall the server into the rack.
4.  Power on the server and any peripheral devices.
Install a 4U PCIe riser assembly
Use this procedure to install a 4U PCIe riser assembly.
Before installing a 4U PCIe riser assembly:
1.  Read the safety information and installation guidelines (see 
“Safety” on page iii and “Installation 
Guidelines” on page 56
).
To install a 4U PCIe riser assembly, complete the following steps:
Watch the procedure 
A video of this procedure is available at YouTube: 
https://www.youtube.com/watch?v=pIb0bIyfkDY&= 
PLYV5R7hVcs-Ak9fT8QAx8fLbEivizjRtp
.
Step 1.  Remove the PCIe expansion tray (see 
“Remove the PCIe expansion tray” on page 92) to install the 
PCIe connector guide. 
126
ThinkSystem SR860 Setup Guide