3d model for ROCK 3A

HI!
Does anyone have a 3D model for ROCK 3A in *.step or *.parasolid format? I don’t have any software to open the .emn/.emp format. (https://dl.radxa.com/rock3/docs/hw/3a/rock3a_v1.3_3d_emn_emp.zip). I need a 3D model to design a housing for my home media server.