The Cisco AIR??CT5508??HA??K9 Wireless Controller is a Cisco 5500 Series Controller built to manage up?to?500 802.11ac and 802.11n Wireless Access Points. The High-Availability (HA) license allows this unit to provide redundancy for another 5508 Controller, sharing its license and maintaining uptime in case of a device failure. This Cisco AIR??CT5508??HA??K9 Wireless Controller has been tested for complete functionality by our expert in-house Certified Technician and is ready to ship today! Purchase with confidence, as the photos above represent the exact quality of your items, and come bundled with our 90 Day Warranty. *Please note, we have additional refurbished Cisco Wireless Controllers in stock; feel free to send a message and we will update the quantity to suit your specific needs.* Thank you for choosing AltaTech for all of your lightning-fast IT needs!