IBM Flex System p270 Compute Node Installation And Service Manual page 66

Figure 23. Installing an I/O expansion ETE adapter on its connector
9. Install the I/O expansion adapter:
a. Make sure that the slot's two blue release tabs are in the open position, as indicated in Figure 24
on page 55.
b. Orient the adapter over the system board.
c. Lower the adapter to the system board, aligning the connectors on the adapter with its connector
on the system board. Press down gently until the adapter is firmly seated.
d. Lock the adapter in place by moving the slot's two blue release tabs into the closed position.
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Power Systems: IBM Flex System p270 Compute Node Installation and Service Guide