Due to the inability to test working condition, unit is being sold as parts.The Cisco MAS-U7246VXR-FAN2 is a front-to-back airflow fan tray designed specifically for the uBR7246VXR router. Manufactured by Cisco, this fan tray ensures efficient cooling by providing a direct path for air to flow from the front to the back of the router. This product is a crucial component for maintaining optimal performance and temperature regulation within the server cabinet, making it an essential part of the server cooling system for enterprise networking and server operations.