If all the devices are managed (if not, you can create a smart group with the criteria "Managed"), do a inventory search and at the bottom you will see "export".

Click on Computers
Click on Search Inventory
Create a new "advanced computer search"
Select the criteria you want.
Save.
View.
Scroll down.
Then export it to whatever format you want CSV, TXT, XML.

Thanks a lot !! :)