Lenovo 102912U Installation And User Manual page 78

9. Insert the slot bracket with RMM3 into the position for the PCI card slot bracket you have removed.
Then, secure the slot bracket with RMM3 in place by installing the screw that you have removed
in step 5 on page 64.
Figure 53. Installing the slot bracket with RMM3
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ThinkServer TD230 Installation and User Guide