Lenovo ThinkServer RD650 - Manual (Page 103)

13. Align the mounting stud on the system board with the corresponding hole in the riser card. Align the rear
of the riser card assembly with the corresponding rail guides in the rear of the chassis. Then, carefully
press the riser card assembly straight down into the chassis until it is fully seated.
Note: Carefully fit the installed PCIe cards into the chassis and properly route any cables from the cards.
Figure 58. Installing the riser card assembly
Chapter 6 . Replacing hardware 89