Fujitsu PRIMERGY TX2550 M5 Upgrade And Maintenance Manual page 186

Hard disk drive (HDD) / solid state disk (SSD)
Figure 95: Removing the 3.5-inch HDD bay top cover (B)
▶ Slide back the intrusion switch holder until it disengages from the HDD bay
top cover (1).
▶ Remove the intrusion switch holder (2) and set aside.
▶ Leave the intrusion switch cable connected to the system board.
186 Upgrade and Maintenance Manual TX2550 M5