Memory Module - Lenovo ThinkStation P720 Hardware Maintenance Manual

b. Pivot the new rear fan assembly toward the rear panel as shown until it snaps into position.
Figure 137. Installing the rear fan assembly
c. Connect the rear-fan-assembly cable to the rear-fan-assembly connector on the system board. See
"Parts on the system board" on page 38.
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 220.

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 12 slots for installing DDR4 RDIMMs that provide up to a maximum of 384 GB system
memory. When removing or installing a memory module, use the following guidelines:
• Use 8 GB, 16 GB, or 32 GB DDR4 ECC RDIMMs in any combination up to a maximum of 384 GB.
• If your computer has only one microprocessor installed, install memory modules only in the memory slots
next to that microprocessor following the recommended installation order.
Note: Ensure that the microprocessor is installed into the correct microprocessor socket (
Microprocessor 1). See "Parts on the system board" on page 38.
• If your computer has two microprocessors installed, install equal numbers of memory modules in both
sets of microprocessor DIMM slots for maximum performance.
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