IBM System x3550 M5 Type 5463 Installation And Service Manual page 259

COM port
expansion
slot cover
Figure 167. COM port expansion slot cover installation
5. Insert PCIe riser 2 assembly onto the system board (see "Replacing a PCI
riser-card assembly" on page 172).
6. Insert the COM port bracket connector into the opening of PCIe riser 2
assembly from inside the server; then tighten the screws.
COM port
Figure 168. COM port bracket connector insertion into PCIe riser 2 assembly
7. Connect the COM port bracket cable to the system board.
Expansion
slot cover
Chapter 5. Removing and replacing components
243