Fujitsu PRIMERGY TX1320 M5 Upgrade And Maintenance Manual page 283

Serial interface
Installing the serial interface
Figure 179: Installing the serial interface (A)
▶ Insert the serial interface into the slot (1).
▶ Connect the serial interface cable to the connector "SERIAL" on the system
board (2).
Figure 180: Installing the serial interface (B)
▶ Fasten the serial interface with two hexagon bolts (see circles).
TX1320 M5 Upgrade and Maintenance Manual 283