Lenovo THINKSTATION P320 30BG User Manual page 74

Always install the memory modules in the alphabetic order as shown.
Figure 21. Memory module installation–order
To install or replace a memory module, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 55.
2. Lay the computer on its side for easier access to the system board.
3. Locate the memory slots. See "Parts on the system board" on page 6.
4. Remove any parts that might prevent your access to the memory slots. Depending on your computer
model, you might need to remove the PCIe x16 graphics card for easier access to the memory slots.
See "PCIe card" on page 57.
5. Depending on whether you are installing or replacing a memory module, do one of the following:
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P320 User Guide