Fujitsu PRIMERGY TX1310 M5 Upgrade And Maintenance Manual page 176

Serial interface
Breaking off the metal cover
Figure 115: Removing the metal cover
▶ Insert the flat screw driver into the slot and twist to break off the metal cover
(see close-up).
Installing the serial interface
Figure 116: Installing the serial interface (A)
176 Upgrade and Maintenance Manual TX1310 M5