Lenovo 30BA, Hardware Maintenance Manual

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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 (
18
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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P720 Hardware Maintenance Manual