Fujitsu PRIMERGY RX2540 M7 Upgrade And Maintenance Manual page 204

Hard disk drive (HDD) / solid state disk (SSD)
▶ Position the SAS expander board to the four hooks of the SAS expander
board holder (see circles).
Figure 100: Installing the SAS expander board
▶ Push the SAS expander board in the direction of the arrow.
▶ Fasten the SAS expander board with the screw (see circle).
204 Upgrade and Maintenance Manual RX2540 M7