Lenovo ThinkCentre M55e - Manual (Page 31)

5. Remove the memory module being replaced by opening the retaining clips as
shown.
6. Position the replacement memory module over the memory connector. Make
sure the notch 1 on the memory module aligns correctly with the connector
key 2 on the system board. Push the memory module straight down into the
connector until the retaining clips close.
7. Reinstall the PCI riser assembly and adapters.
8. Go to “Completing the parts replacement” on page 30.
Replacing a PCI adapter
Attention
Do not open your computer or attempt any repair before reading the “Important safety
information” in the Safety and Warranty Guide that was included with your computer. To
obtain a copy of the Safety and Warranty Guide, go to the Support Web site at
http://www.lenovo.com/support.
This section provides instructions on how to replace a PCI adapter.
1. Open the computer cover. See “Opening the cover” on page 5.
Chapter 2. Replacing hardware 23