Cisco FlexStack Extended network stacking module. The Cisco FlexStack-Extended Stacking Module is a high-performance stacking module that allows you to stack up to eight Cisco 2960-X switches together for a unified data and power management solution. This module provides a high-speed stacking bus that allows for the sharing of data and power between the switches in the stack and enables you to easily manage and configure all switches in the stack as a single entity. This part is compatible with the Cisco 2960-X and 2960-XR series switches and provides a flexible and cost-effective solution for deploying and managing large switch networks.
The Cisco Catalyst 9500 Series Switches support dual 1+1 redundant power supplies. The switches ship with one power supply by default. The second power supply can be added at the time the switch is ordered or at a later time. If only one power supply is installed, it should always be in power supply bay 1. The switches also ship with five field-replaceable variable-speed fans