IBM BladeCenter QS20 Problem Determination And Service Manual page 67

Figure 10. Unplugging the control panel and serial cable connectors
6. Set the bezel aside.
7. Plug the InfiniBand card into the PCIe Express adapter card. Make sure the
index hole of the InfiniBand card matches the index mark of the adapter, see
Figure 11 on page 50.
Chapter 5. Installing and removing replaceable units
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