Lenovo ThinkSystem SR950 Setup Manual page 349

Figure 100. M.2 backplane installation
Step 1. Align the openings in the plastic supports at each end of the M.2 backplane with the guide pins on
the system board; then, insert the backplane in the system-board connector.
Step 2. Press down on the M.2 backplane to fully seat it.
After you install the M.2 backplane, complete the following steps:
1. Install the riser that you removed to access the M.2 backplane. See "Install the riser for slot 10 to 15
(riser 2)" on page 365 or "Install the riser for slot 16 to 17 (riser 3)" on page 368.
2. Install the I/O tray and connect all cables. See "Install the I/O tray" on page 335.
3. See the documentation that comes with the M.2 backplane for device-driver and configuration
information to complete the installation.
M.2 backplane retainer adjustment
The M.2 backplane retainer can be adjusted to accommodate three physical M.2 drive sizes.
Complete the following steps to adjust the M.2 backplane retainer position:
Figure 101. M.2 backplane retainer adjustment
Step 1. Locate the correct keyhole to accommodate the retainer for the size of the M.2 drive that you are
installing.
Step 2. Press both sides of the retainer and move it toward the connector until it is in the large opening of
the keyhole; then, remove the retainer from the backplane.
Appendix B. Component reference
345