So I finally got around to ordering and receiving my new zwave module for my isy994.  There are three screws and a plugged hole.  I remove the three screws and can’t open the device.  I looked inside by the fourth plugged hole and there is no screw.  It does not slide open.  It appears as if the back, with the power port, is holding it back.

 

any idea how to get this open without breaking it?

 

 

Under the label

Thank you so much, that was the exact info I needed.  I did feel around the stickers but didn’t feel anything.  Of course once you said look there my fingers magically found the screw.  

That last screw got me too.

The early production ISY-994i had a different label setup and did not cover any of the case mounting screws. I don't remember seeing any information indicating it was now covered. Glad you found it.