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The Altitude 4521 is an independent, cost-effective access point. As a single radio independent AP, the Altitude 4521 can be used as a standalone AP or with a wireless controller, this AP also can become a virtual controller and control up to 24 additional Altitude 4521 access points. This access point is targeted at enterprise and campus deployments that are looking to lower the cost of deploying and operating a secure, reliable 802.11n Wireless LAN (WLAN) but are also looking for a more robust solution than a pure dependent AP approach. The Altitude 4521 can continue to provide service if a connection to the controller is lost, for example by a cable cut or power failure. The Altitude 4521 is equipped with a 2 x 2 MIMO 802.11 a/b/g/n (2.4 and 5 GHz) band unlocked radio with a combined output power of a maximum 27 dBm. The 4521 supports local bridging and has a single Gigabit Ethernet uplink port. The device has a small form factor. The Altitude 4521 can be powered via the Gigabit Ethernet uplink port with standard 802.3af PoE.