A scalable flow monitoring solution takes in standard flow records exported from network devices such as routers, switches, firewalls, hubs, etc. In addition, the update module requests a second manifest file from a server according to a product upgrade location identifier. The retention mechanism is configured to apply a retaining force on the at least one pad, in addition to a force between the retaining head and the at least one pad, where the retaining force acts substantially along a radial direction of the ring, away from a center of the ring.