Lenovo ThinkStation P520 Hardware Maintenance Manual page 155

e. Press the mounting stud downward and turn the mounting stud 90-degree clockwise to secure the
heat sink to the system board.
Figure 93. Securing the heat sink to the system board
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 202.
M.2 solid-state drive in an M.2 solid-state drive PCIe adapter
Install M.2 solid-state drives in the alphabetic order as shown.
Figure 94. M.2 solid-state drive installation order
To remove or install an M.2 solid-state drive in the M.2 solid-state drive PCIe adapter, do the following:
1. Remove the M.2 solid-state drive PCIe adapter from the PCIe card slot. See "Full-length PCIe card" on
page 159.
.
Chapter 9 Hardware removal and installation
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