Fujitsu PRIMERGY RX2540 M2 Upgrade And Maintenance Manual page 578

Appendix
16.1.1.2 2.5-inch HDD versions
Figure 437: Front side 2.5-inch HDDs (up to 16 HDDs)
Figure 438: Front side 2.5-inch HDDs (up to 24 HDDs)
Pos. Component
1 Front panel module
2 Space for LTO drive
3 Space for hard disc drives (depending on the configuration)
578 Upgrade and Maintenance Manual
RX2540 M2