Fujitsu PRIMERGY RX300 S7 Upgrade And Maintenance Manual page 282

Main memory
Figure 143: Installing memory modules (B)
Ê Align the notch on the bottom of the module with the crossbar in the
connector (see close-up).
Figure 144: Installing memory modules (C)
Ê Press down on the memory module until the securing clips snap into the
cutouts at each end of the module.
282 Upgrade and Maintenance Manual
RX300 S7