C9800-40-K9 is the Cisco Catalyst 9800-40 Wireless Controller. Built from the ground-up for the Intent-based networking and Cisco DNA, Cisco Catalyst 9800 Series Wireless Controllers are Cisco IOS® XE based and integrate the RF excellence of Cisco Aironet® access points creating the best-in-class wireless experience for your evolving and growing organization. The Cisco Catalyst 9800 Series Wireless Controllers are built on an open and programmable architecture with built-in security, streaming telemetry and rich analytics. The Cisco Catalyst 9800 Series Wireless Controllers are built on the three pillars of network excellence— always on, secure, and deployed anywhere— which strengthen the network by providing the best wireless experience without compromise, while saving time and money. The Cisco® Catalyst® 9800-40 is a fixed wireless controller with seamless software updates for midsize and large enterprises.