https://business.vive.com/us/support/business-plus/category_howto/cant-enroll-vive-ultimate-tracker.html
What should I do if I see "No more device Seats quote" when trying to enroll VIVE Ultimate Tracker?
You need a different type of seat license from headsets to enroll your VIVE Ultimate Tracker.
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NeweggBusiness - HTC Vive Ultimate Tracker - for All-in-One XR Headsets and PC VR Streaming
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