Record device and model
Model identity matters because two products with similar names can support different standards.
Record control path
Note whether each device uses Matter, direct Wi-Fi, Thread, a proprietary cloud or a bridge.
Record the controller or hub
Know which speaker, display, hub or bridge is actually required.
Record support dependencies
Subscriptions, manufacturer accounts, batteries and firmware support are part of ownership.
Keep in mind. Compatibility is not permanent. Confirm the current manufacturer, platform and certification information before purchasing, resetting or migrating a device.