This document is generic irrespective of vendors.
These days the data cards comes up with a slot to host Micro SD cards used to store data. As a security measure some of the security admins would like to block storage, Device control policy can be configured to block it, below is the solution to the requirement.
Below is the screen shot of the device manager before connecting the device.
Below is the screen shot of the device manager after connecting the device.
These screen shot is specific to one device and can vary based on the data card.
Configuration of device control policy.
Important Note: The above document might vary depending on the vendors and the design of the data card. Before applying this policy to product a thorough testing is needed.