Lenovo ThinkSystem SR550 Setup Manual page 61

Figure 32. Memory module installation
Step 1. Open the retaining clips on each end of the memory module slot.
Attention: To avoid breaking the retaining clips or damaging the memory module slots, open and
close the clips gently.
Step 2. Align the memory module with the slot, and gently place the memory module on the slot with both
hands.
Step 3. Firmly press both ends of the memory module straight down into the slot until the retaining clips
snap into the locked position.
Note: If there is a gap between the memory module and the retaining clips, the memory module
has not been correctly inserted. Open the retaining clips, remove the memory module, and then
reinsert it.
Memory module installation rules
Memory modules must be installed in a specific order based on the memory configuration that you
implement on your server.
Your server supports up to 6 memory modules when one processor is installed, and up to 12 memory
modules when two processors are installed. The following memory configurations are supported, depending
on the processors installed:
• For Intel Xeon SP Gen 1:
– Minimum: 8 GB (only one processor installed and only one 8 GB RDIMM installed in the CPU1 DIMM3
slot)
.
Chapter 3 Server hardware setup
57