Single-Site Upgrade to NBX R6.0 System Software License (available for NBX 100, NBX V3000, and V5000 NBX platforms) must be present or the NBX system will not allow moves/adds/changes (MACs) to be performed. Note: this license is not required on new system purchases; the license is embedded in these cases. License includes right-to-use licenses and keys for R4.2, R4.3, R5.0 and R6.0.