EXFO FTB-2 - Manual (Page 44)

Getting Started with Your Unit
34 FTB-2 and FTB-2 Pro
Inserting and Removing Test Modules
5. Position the unit so that the left panel is facing you.
6. Lift the mobile part of the retaining screw and use it to turn the
retaining screw counterclockwise until it stops.
The module will be slowly released from the slot.
7. Place the unit so that the right panel is facing you.
Turn retaining screw
counterclockwise
Left panel