Cisco Catalyst 9800-40 IEEE 802.11a/b/g/d/e/h/n/k/r/u/w/ac/ax 40 Gbit/s Wireless LAN ControllerCisco Catalyst 9800 40 Wireless LAN Controller 40 Gbps Throughput with IEEE 802. 11a b g d e h n k r u w ac ax The Cisco Catalyst 9800 40 Wireless LAN Controller is a purpose built platform designed to meet the demands of modern, intent based networks. Built on Cisco IOS XE and engineered to leverage the RF excellence of Cisco Aironet access points, this controller delivers a scalable, secure, and centralized wireless backbone for growing enterprises.