Lenovo ThinkStation D20 - Manual (Page 33)

6. Position the new memory module over the memory slot. Make sure the notch 1 on the memory module
aligns correctly with the slot key 2 on the system board. Push the memory module straight down into
the slot until the retaining clips close.
Figure 27. Installing the memory module
7. To install the memory fan, engage the rear of the duct with the retainer on the system board and
then pivot the duct downwards until the duct snaps into position. Reconnect the memory fan cable
to the system board.
Figure 28. Installing the memory fan duct
8. Reinstall the blue shipping clip if your computer needs to be repackaged and shipped in the future.
9. Go to Chapter 4 “Completing the parts replacement” on page 45.
Note: Your system memory speed is determined by a number of factors, including the microprocessor
model and the type, speed, size (capacity), and number of DIMMs installed. See Appendix A “System
memory speed” on page 49 for more information.
Installing or replacing adapter cards
This section provides instructions for installing adapter cards. Your computer has the following six expansion
slots for installing or replacing adapter cards:
• Two PCI adapter card slots
• One PCI Express x1 adapter card slot
• One PCI Express x4 adapter card slot
• Two PCI Express x16 graphics adapter card slots
Chapter 3 . Installing options and replacing hardware 27