Lenovo ThinkServer TD100x - Manual (Page 30)

Note: The bezel will also disengage from the chassis hinges if you rotate the
bezel beyond 180° or if excessive pressure is applied to the bezel. Do
not be alarmed because this is how the bezel was designed. The bezel
is designed with breakaway hinges so that you can easily reattach it to
the chassis.
14 ThinkServer TD100 and TD100x Types 4203, 4204, 4205, 4206, 6398, 6399, 6419, and 6429: Installation Guide