Lenovo ThinkStation P920, Hardware Maintenance Manual, Page: 160 / 246

4. With the handle 1 open, slide the power supply assembly into the power supply assembly bay until it
snaps into position. Pivot the handle to the closed position to ensure that the new power supply
assembly is fully installed into position.
Figure 99. Installing the power supply assembly
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to “Completing the parts replacement” on page 210.
Memory module
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 “Read this first: Important safety information” on page 1.
Your computer has 16 slots for installing or replacing DDR4 DIMMs that provide up to a maximum of 2048
GB system memory. When installing or replacing a memory module, use the following guidelines:
• Use any of DDR4 ECC RDIMMs, DDR4 ECC LRDIMMs, or DDR4 ECC 3DS RDIMMs for your computer.
Do not install the RDIMMs, LRDIMMs, or 3DS RDIMMs into the same computer.
• Use 8 GB, 16 GB, or 32 GB RDIMMs in any combination up to a maximum of 512 GB.
• Use 64 GB LRDIMMs up to a maximum of 1024 GB.
• Use 128 GB 3DS RDIMM up to a maximum of 2048 GB.
Memory module installation rules
Install memory modules in the alphabetic order as shown.
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P920 Hardware Maintenance Manual