Lenovo System x3500 M5 Type 5464 Installation And Service Manual page 306

Figure 218. Lose the thumb screws
Step 8. Slide the system board toward the front of the server; then, grasp the thumbs screws as the
handles to carefully lift the system board out of the server.
Figure 219. System board removal
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System x3500 M5 Installation and Service Guide
Thumb screw / handle
System board
2
1