Rev 1.0
I/O Card Installation 
Figure 8: Install the Plastic Leg onto the Board
9.Push the Connector board into the card. The connector board must be installed as seen in Figure 9, directed toward the back of the server.
Figure 9: Installing the Connector Board into the HCA Card
10.Put the card into place in the server, catching the cages into the front panel of the server. The metal leg must go inside of the server and line up with the hole in the side of the server. Also push the connector board into the socket in the server.
11.Screw in a flat head screw for the metal leg.
Figure 10: Dell Card Installed
Install a flathead screw through the server into the metal leg.
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Mellanox Technologies