The connector used to attach the DMD to the DMD PCB is not keyed so it is possible to install the DMD in the improper orientation and damage it. Here is the proper orientation of the DMD on the PCB.
The square notch on the DMD should be on the side with the J1 marking on the PCB. Any installation or removal of the DMD should be done carefully to avoid bending the pins. Always exercise ESD precautions when handling the DMD or associated electronics.