Lenovo ThinkSystem SD550 V3 User Manual page 190

Figure 115. Removal of the rear I/O module
Step 4. If necessary, remove the rear air baffle or 2U performance PHM, front air baffle, and drive cage (see
"Remove the air baffle" on page
"Remove the drive cage assembly" on page
system board (see
Attention: The task of removing or installing a 2U performance PHM must be executed by a
trained technician.
After this task is completed
1. Install a replacement unit (see
2. If you are instructed to return the component or optional device, follow all packaging instructions, and
use any packaging materials for shipping that are supplied to you.
Install a rear I/O module
Follow instructions in this section to install a rear I/O module.
About this task
To avoid potential danger, make sure to read and follow the safety information.
ThinkSystem SD550 V3 User Guide
180
83, "Remove the processor and heat sink" on page
"Rear I/O and OCP module cable routing" on page
"Install a rear I/O module" on page
96). Then, disconnect the rear I/O cable from the
180).
165, or
226).