Lenovo ThinkCentre M73z Hardware Maintenance Manual page 97

11. Position the new rear I/O assembly over the rear I/O assembly connector on the system board so
that the notch on the rear I/O assembly aligns with the key in the connector. Then, insert the rear
I/O assembly into the connector until it is seated firmly and the four screw holes
corresponding holes in the chassis.
Figure 27. Installing the rear I/O assembly
12. Install the five screws to secure the rear I/O assembly to the chassis.
Figure 28. Installing the five screws to secure the rear I/O assembly
13. Install the system board shield. See "Removing and installing the system board shield" on page 88.
1 align with the
.
Chapter 8 Replacing FRUs
91