The Data Sync tab is used to monitor and control syncing tournament data to the FIRST servers; the functions and settings in this tab are protected using the Settings Lock. It is important to ensure that for off-season events not authorized to sync data to FIRST the Sync Setting is DISABLED. If this setting is ENABLED, CPU and network resources are consumed attempting to upload tournament data to FIRST servers and may cause delays or errors while running the event.
Beyond the enable checkbox, status information is displayed for use by FRC Engineering when performing advanced sync related tasks- it's not useful to (or available to) the end user.