3D step file for ConnectCore 6UL SBC Express

Dear all,
Where can we download the 3D step file for ConnectCore 6UL SBC Express??
In the following link:
https://www.digi.com/resources/documentation/Digidocs/90001514/default.htm#reference/hardware_documentation_links/r_mechanical_drawings.htm%3FTocPath%3DHardware%2520documentation|_____3

this information is available for System-on-module and SBC Pro but it is missing for SBC Express. Could you please tell us how to get it?
Thank you in advance for your kind cooperation.
BR,
alvaro

Here (under Mechanical Drawings):

https://www.digi.com/support/productdetail?pid=5619&type=documentation