Cisco Aironet 1600 Series Standalone Access Point (Air-Sap1602E-A-K9) 802.11n 300 Mbps 802.11n with 3x3 multiple-input multiple-output (MIMO) technology with two spatial streams, which sustains 300-Mbps rates over a greater range for more capacity and reliability than competing access points. Radio resource management (RRM): Automated self-healing optimizes the unpredictability of RF to reduce dead spots and help ensure high-availability client connections. CleanAir Express: Effectively detects RF interference and provides basic spectrum analysis capability while simplifying ongoing operations. Cisco ClientLink 2.0 technology: Improves downlink performance to all mobile devices including 802.11n while improving battery life on mobile devices such as smartphones and tablets. Cisco BandSelect technology: Improves 5-GHz client connections in mixed-client environments. External Antenna sold separately.