Hitachi GR2000 Series Installation Manual page 378

Methods of fitting/removing the GBIC to NEIG-4C are described below:
How to fit.
(1) Raise the lever, and
push it in securely to the
In case of Module A
How to remove.
(2) Let the lever fall down.
(1) Push the modules in securely to the end.
Note: Push it in until "click" is heard.
In case of Module B