Alaxala AX6300S Series Instruction Manual page 204

5. Adding and Replacing Optional Modules
Figure 5-41 Removing a network interface unit (2)
(1) Lever
NOTE
Step 5
Remove the network interface unit. (Pull the unit a little way toward you while
holding the levers and supporting the sides.)
Figure 5-42 Removing a network interface unit (3)
180
Use the levers so that the connectors on the optional module and the
Switch can be disengaged correctly. When moving a lever, move the
right and left levers slowly and at the same time without exerting
excessive force.