Fujitsu PRIMERGY RX2530 M4 Upgrade And Maintenance Manual page 310

Liquid cooling (LC)
Memory spacer
Figure 215: Memory spacer
The memory spacers are necessary to adjust the memory cooling units at the
right position.
CPU 2 CPU 1
Figure 216: Positions of the memory spacers
The memory spacers must be installed between the following memory slots:
1J and 2J, 1G and 2G, 2K and 1K, 1A and 2A, 2D and 1D, 2F and 1F, see also
figure 211 on page 306.
Memory covers
Figure 217: Memory covers - bottom view
310 Upgrade and Maintenance Manual
RX2530 M4