Hello valley,   I actually used the search term:  site:[URL] /api/DeviceService/Devices   I did see it was for Modular but matched what you are seeing. I thought it may be the same just not in the release notes for OEM for some reason.   What I have since found out, by default the Devices API shows the first 50 devices. You can either query 50 at a time: /api/DeviceService/Devices?$skip=50&$top=50   or query a larger number: /api/DeviceService/Devices?$top=1000   OME RESTful API Guide shows  Note 1 on page 305. [URL]  
Apologies for cross-posting into "Support Assist Enterprise" board: OME API's DeviceService/Devices missing devices.  Appreciate any pointers. (For some reason I couldn't find this board, then found an old post in that board about SupportAssist not listing all devices from OME inventory.  But that one was about UI and was fixed a long time ago.)
OME 3.8.0 API dropping devices