Hitachi CB 520H B1 Service Manual page 186

7 (Skip this step when the connection kit L/P is not installed.)
.
Turn over the connector of the connection kit L/P toward PCI expansion
blade, align the connector with the male connector on the main board of
the PCI expansion blade, and then push in the connector.
8 Align the connector and guide holes of the connection board of the
.
connection kit F/H with the male connector and guide pins on the main
board of the server blade, respectively.
5-34
Figure 5-40 Installing the connection bracket
Figure 5-41 Installing the connection kit L/P
Replacing parts
Hitachi Compute Blade 500 Series System Service Manual