Incorporating a dish reflector design with advanced technology, the Power Beam is Ubiquiti Networks airMAX CPE for customer locations. Available Worlwide version and US/CA Version. Let us a note after your purchase. *NBE-M2-400 was replaced by the PBE-M2-400. Recentely, Ubiquiti renamed them, so the only thing that changed was the name. Both items have the same technical specifications. You can upload the newest firmware from the ubiquity website.